diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb4aa55c..8e33b0f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,15 @@
 
 All notable changes to this project will be documented in this file. This project uses [Semantic Versioning](https://semver.org/)
 
-## [Version 1.6.0](https://github.com/OpenWonderLabs/node-switchbot/releases/tag/v1.5.0) (2022-10-18)
+## [Version 1.6.1](https://github.com/OpenWonderLabs/node-switchbot/releases/tag/v1.6.1) (2022-10-18)
+
+## What's Changed
+
+- Fixed Issue where node-switchbot wouldn't be found.
+
+**Full Changelog**: https://github.com/OpenWonderLabs/node-switchbot/compare/v1.6.0...v1.6.1
+
+## [Version 1.6.0](https://github.com/OpenWonderLabs/node-switchbot/releases/tag/v1.6.0) (2022-10-18)
 
 ## What's Changed
 
diff --git a/README.md b/README.md
index ef098c3f..757e4c58 100644
--- a/README.md
+++ b/README.md
@@ -110,9 +110,9 @@ Monitoring the advertising packets, you can find your devices and know the lates
 
 ```JavaScript
 // Load the node-switchbot and get a `Switchbot` constructor object
-const Switchbot = require('node-switchbot');
+let Switchbot = require('node-switchbot');
 // Create an `Switchbot` object
-const switchbot = new Switchbot();
+let switchbot = new Switchbot();
 
 (async () => {
   // Start to monitor advertisement packets
@@ -137,7 +137,7 @@ The [`startScan()`](#startscan-method) and [`wait()`](#Switchbot-wait-method) me
 
 ```javascript
 // Load the node-switchbot and get a `Switchbot` constructor object
-const Switchbot = require("node-switchbot");
+let Switchbot = require("node-switchbot");
 // Create an `Switchbot` object
 let switchbot = new Switchbot();
 
@@ -213,13 +213,13 @@ This sample discovers a Bot (WoHand), then put the Bot's arm down, finally put i
 
 ```javascript
 // Load the node-switchbot and get a `Switchbot` constructor object
-const Switchbot = require("node-switchbot");
+let Switchbot = require("node-switchbot");
 // Create an `Switchbot` object
-const switchbot = new Switchbot();
+let switchbot = new Switchbot();
 
 (async () => {
   // Find a Bot (WoHand)
-  const bot_list = await switchbot.discover({ model: "H", quick: true });
+  let bot_list = await switchbot.discover({ model: "H", quick: true });
   if (bot_list.length === 0) {
     throw new Error("No device was found.");
   }
@@ -246,13 +246,13 @@ In this code, you can get a [`SwitchbotDeviceWoHand`](#SwitchbotDeviceWoHand-obj
 In order to use the node-switchbot, you have to load the node-switchbot module as follows:
 
 ```JavaScript
-const Switchbot = require('node-switchbot');
+let Switchbot = require('node-switchbot');
 ```
 
 You can get an `Switchbot` constructor from the code above. Then you have to create an `Switchbot` object from the `Switchbot` constructor as follows:
 
 ```javascript
-const switchbot = new Switchbot();
+let switchbot = new Switchbot();
 ```
 
 The `Switchbot` constructor takes an argument optionally. It must be a hash object containing the properties as follows:
@@ -267,11 +267,11 @@ The sample code below shows how to pass a `Nobel` object to the `Switchbot` cons
 
 ```JavaScript
 // Create a Noble object
-const noble = require('@abandonware/noble');
+let noble = require('@abandonware/noble');
 
 // Create a Switchbot object
-const Switchbot = require('node-switchbot');
-const switchbot = new Switchbot({'noble': noble});
+let Switchbot = require('node-switchbot');
+let switchbot = new Switchbot({'noble': noble});
 ```
 
 In the code snippet above, the variable `switchbot` is an `Switchbot` object. The `Switchbot` object has a lot of methods as described in sections below.
diff --git a/lib/parameter-checker.js b/lib/parameter-checker.js
index 1f30ef72..cbb3f2c6 100644
--- a/lib/parameter-checker.js
+++ b/lib/parameter-checker.js
@@ -37,7 +37,7 @@ class ParameterChecker {
    *   an `Error` object will be set to `this._error`.
    *
    * [Usage]
-   * const valid = parameterChecker.check(params, {
+   * let valid = parameterChecker.check(params, {
    *   level: {
    *     required: false,
    *     type: 'integer',
@@ -50,7 +50,7 @@ class ParameterChecker {
    *   }
    * });
    * if(!valid) {
-   *   const e = parameterChecker.error.message;
+   *   let e = parameterChecker.error.message;
    *   throw new Error(message);
    * }
    * ---------------------------------------------------------------- */
@@ -78,13 +78,13 @@ class ParameterChecker {
       return false;
     }
 
-    const result = true;
-    const name_list = Object.keys(rules);
+    let result = true;
+    let name_list = Object.keys(rules);
 
-    for (const i = 0; i < name_list.length; i++) {
-      const name = name_list[i];
-      const v = obj[name];
-      const rule = rules[name];
+    for (let i = 0; i < name_list.length; i++) {
+      let name = name_list[i];
+      let v = obj[name];
+      let rule = rules[name];
 
       if (!rule) {
         rule = {};
@@ -458,7 +458,7 @@ class ParameterChecker {
       }
     }
     if (typeof rule.minBytes === "number") {
-      const blen = Buffer.from(value, "utf8").length;
+      let blen = Buffer.from(value, "utf8").length;
       if (blen < rule.minBytes) {
         this._error = {
           code: "LENGTH_UNDERFLOW",
@@ -475,7 +475,7 @@ class ParameterChecker {
       }
     }
     if (typeof rule.maxBytes === "number") {
-      const blen = Buffer.from(value, "utf8").length;
+      let blen = Buffer.from(value, "utf8").length;
       if (blen > rule.maxBytes) {
         this._error = {
           code: "LENGTH_OVERFLOW",
diff --git a/lib/switchbot-advertising.js b/lib/switchbot-advertising.js
index 56572a44..0a504145 100644
--- a/lib/switchbot-advertising.js
+++ b/lib/switchbot-advertising.js
@@ -61,16 +61,16 @@ class SwitchbotAdvertising {
    * device, this method will return `null`.
    * ---------------------------------------------------------------- */
   parse(peripheral, onlog) {
-    const ad = peripheral.advertisement;
+    let ad = peripheral.advertisement;
     if (!ad || !ad.serviceData) {
       return null;
     }
-    const serviceData = ad.serviceData[0] || ad.serviceData;
-    const manufacturerData = ad.manufacturerData;
-    const buf = serviceData.data;
+    let serviceData = ad.serviceData[0] || ad.serviceData;
+    let manufacturerData = ad.manufacturerData;
+    let buf = serviceData.data;
 
-    const bufIsInvalid = !buf || !Buffer.isBuffer(buf) || buf.length < 3;
-    const manufacturerDataIsInvalid =
+    let bufIsInvalid = !buf || !Buffer.isBuffer(buf) || buf.length < 3;
+    let manufacturerDataIsInvalid =
       !manufacturerData ||
       !Buffer.isBuffer(manufacturerData) ||
       manufacturerData.length < 3;
@@ -79,8 +79,8 @@ class SwitchbotAdvertising {
       return null;
     }
 
-    const model = buf.slice(0, 1).toString("utf8");
-    const sd = null;
+    let model = buf.slice(0, 1).toString("utf8");
+    let sd = null;
 
     if (model === "H") {
       sd = this._parseServiceDataForWoHand(buf, onlog);//WoHand
@@ -123,11 +123,11 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const address = peripheral.address || "";
+    let address = peripheral.address || "";
     if (address === "") {
       address = peripheral.advertisement.manufacturerData || "";
       if (address !== "") {
-        const str = peripheral.advertisement.manufacturerData
+        let str = peripheral.advertisement.manufacturerData
           .toString("hex")
           .slice(4, 16);
         address = str.substr(0, 2);
@@ -139,7 +139,7 @@ class SwitchbotAdvertising {
     } else {
       address = address.replace(/-/g, ":");
     }
-    const data = {
+    let data = {
       id: peripheral.id,
       address: address,
       rssi: peripheral.rssi,
@@ -165,14 +165,14 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte1 = buf.readUInt8(1);
-    const byte2 = buf.readUInt8(2);
+    let byte1 = buf.readUInt8(1);
+    let byte2 = buf.readUInt8(2);
 
-    const mode = byte1 & 0b10000000 ? true : false; // Whether the light switch Add-on is used or not
-    const state = byte1 & 0b01000000 ? true : false; // Whether the switch status is ON or OFF
-    const battery = byte2 & 0b01111111; // %
+    let mode = byte1 & 0b10000000 ? true : false; // Whether the light switch Add-on is used or not
+    let state = byte1 & 0b01000000 ? true : false; // Whether the switch status is ON or OFF
+    let battery = byte2 & 0b01111111; // %
 
-    const data = {
+    let data = {
       model: "H",
       modelName: "WoHand",
       mode: mode,
@@ -192,17 +192,17 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte2 = buf.readUInt8(2);
-    const byte3 = buf.readUInt8(3);
-    const byte4 = buf.readUInt8(4);
-    const byte5 = buf.readUInt8(5);
-
-    const temp_sign = byte4 & 0b10000000 ? 1 : -1;
-    const temp_c = temp_sign * ((byte4 & 0b01111111) + (byte3 & 0b00001111) / 10);
-    const temp_f = (temp_c * 9 / 5) + 32;
+    let byte2 = buf.readUInt8(2);
+    let byte3 = buf.readUInt8(3);
+    let byte4 = buf.readUInt8(4);
+    let byte5 = buf.readUInt8(5);
+
+    let temp_sign = byte4 & 0b10000000 ? 1 : -1;
+    let temp_c = temp_sign * ((byte4 & 0b01111111) + (byte3 & 0b00001111) / 10);
+    let temp_f = (temp_c * 9 / 5) + 32;
     temp_f = Math.round(temp_f * 10) / 10;
 
-    const data = {
+    let data = {
       model: "T",
       modelName: "WoSensorTH",
       temperature: {
@@ -226,15 +226,15 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte1 = buf.readUInt8(1);
-    const byte4 = buf.readUInt8(4);
+    let byte1 = buf.readUInt8(1);
+    let byte4 = buf.readUInt8(4);
     
 
-    const onState = byte1 & 0b10000000 ? true : false; // 1 - on
-    const autoMode = byte4 & 0b10000000 ? true : false; // 1 - auto
-    const percentage = byte4 & 0b01111111; // 0-100%, 101/102/103 - Quick gear 1/2/3
+    let onState = byte1 & 0b10000000 ? true : false; // 1 - on
+    let autoMode = byte4 & 0b10000000 ? true : false; // 1 - auto
+    let percentage = byte4 & 0b01111111; // 0-100%, 101/102/103 - Quick gear 1/2/3
 
-    const data = {
+    let data = {
       model: "e",
       modelName: "WoHumi",
       onState: onState,
@@ -255,20 +255,20 @@ class SwitchbotAdvertising {
       return null;
     }
 
-    const byte1 = buf.readUInt8(1);
-    const byte2 = buf.readUInt8(2);
-    const byte5 = buf.readUInt8(5);
+    let byte1 = buf.readUInt8(1);
+    let byte2 = buf.readUInt8(2);
+    let byte5 = buf.readUInt8(5);
 
-    const tested = byte1 & 0b10000000 ? true : false;
-    const movement = byte1 & 0b01000000 ? true : false;
-    const battery = byte2 & 0b01111111;
-    const led = (byte5 & 0b00100000) >> 5;
-    const iot = (byte5 & 0b00010000) >> 4;
-    const sense_distance = (byte5 & 0b00001100) >> 2;
-    const lightLevel = byte5 & 0b00000011;
-    const is_light = byte5 & 0b00000010 ? true : false;
+    let tested = byte1 & 0b10000000 ? true : false;
+    let movement = byte1 & 0b01000000 ? true : false;
+    let battery = byte2 & 0b01111111;
+    let led = (byte5 & 0b00100000) >> 5;
+    let iot = (byte5 & 0b00010000) >> 4;
+    let sense_distance = (byte5 & 0b00001100) >> 2;
+    let lightLevel = byte5 & 0b00000011;
+    let is_light = byte5 & 0b00000010 ? true : false;
 
-    const data = {
+    let data = {
       model: "s",
       modelName: "WoMotion",
       tested: tested,
@@ -295,21 +295,21 @@ class SwitchbotAdvertising {
       return null;
     }
 
-    const byte1 = buf.readUInt8(1);
-    const byte2 = buf.readUInt8(2);
-    const byte3 = buf.readUInt8(3);
-    const byte8 = buf.readUInt8(8);
-
-    const hallState = (byte3 >> 1) & 0b00000011;
-    const tested = byte1 & 0b10000000;
-    const movement = byte1 & 0b01000000 ? true : false; // 1 - Movement detected
-    const battery = byte2 & 0b01111111; // %
-    const contact_open = byte3 & 0b00000010 == 0b00000010;
-    const contact_timeout = byte3 & 0b00000100 == 0b00000100;
-    const lightLevel = byte3 & 0b00000001;
-    const button_count = byte8 & 0b00001111;
-
-    const data = {
+    let byte1 = buf.readUInt8(1);
+    let byte2 = buf.readUInt8(2);
+    let byte3 = buf.readUInt8(3);
+    let byte8 = buf.readUInt8(8);
+
+    let hallState = (byte3 >> 1) & 0b00000011;
+    let tested = byte1 & 0b10000000;
+    let movement = byte1 & 0b01000000 ? true : false; // 1 - Movement detected
+    let battery = byte2 & 0b01111111; // %
+    let contact_open = byte3 & 0b00000010 == 0b00000010;
+    let contact_timeout = byte3 & 0b00000100 == 0b00000100;
+    let lightLevel = byte3 & 0b00000001;
+    let button_count = byte8 & 0b00001111;
+
+    let data = {
       model: "d",
       modelName: "WoContact",
       movement: movement,
@@ -339,19 +339,19 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte1 = buf.readUInt8(1);
-    const byte2 = buf.readUInt8(2);
-    const byte3 = buf.readUInt8(3);
-    const byte4 = buf.readUInt8(4);
-
-    const calibration = byte1 & 0b01000000 ? true : false; // Whether the calibration is completed
-    const battery = byte2 & 0b01111111; // %
-    const inMotion = byte3 & 0b10000000 ? true : false;
-    const currPosition = byte3 & 0b01111111; // current positon %
-    const lightLevel = (byte4 >> 4) & 0b00001111; // light sensor level (1-10)
-    const deviceChain = byte4 & 0b00000111;
-
-    const data = {
+    let byte1 = buf.readUInt8(1);
+    let byte2 = buf.readUInt8(2);
+    let byte3 = buf.readUInt8(3);
+    let byte4 = buf.readUInt8(4);
+
+    let calibration = byte1 & 0b01000000 ? true : false; // Whether the calibration is completed
+    let battery = byte2 & 0b01111111; // %
+    let inMotion = byte3 & 0b10000000 ? true : false;
+    let currPosition = byte3 & 0b01111111; // current positon %
+    let lightLevel = (byte4 >> 4) & 0b00001111; // light sensor level (1-10)
+    let deviceChain = byte4 & 0b00000111;
+
+    let data = {
       model: "c",
       modelName: "WoCurtain",
       calibration: calibration,
@@ -374,31 +374,31 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte1 = buf.readUInt8(1);//power and light status
-    const byte2 = buf.readUInt8(2);//bulb brightness
-    const byte3 = buf.readUInt8(3);//bulb R
-    const byte4 = buf.readUInt8(4);//bulb G
-    const byte5 = buf.readUInt8(5);//bulb B
-    const byte6 = buf.readUInt8(6);//bulb temperature
-    const byte7 = buf.readUInt8(7);
-    const byte8 = buf.readUInt8(8);
-    const byte9 = buf.readUInt8(9);
-    const byte10 = buf.readUInt8(10);//bulb mode
-
-    const power = byte1;
-    const red = byte3;
-    const green = byte4;
-    const blue = byte5;
-    const color_temperature = byte6;
-    const state = byte7 & 0b01111111 ? true : false;
-    const brightness = byte7 & 0b01111111;
-    const delay = byte8 & 0b10000000;
-    const preset = byte8 & 0b00001000;
-    const color_mode = byte8 & 0b00000111;
-    const speed = byte9 & 0b01111111;
-    const loop_index = byte10 & 0b11111110;
-
-    const data = {
+    let byte1 = buf.readUInt8(1);//power and light status
+    let byte2 = buf.readUInt8(2);//bulb brightness
+    let byte3 = buf.readUInt8(3);//bulb R
+    let byte4 = buf.readUInt8(4);//bulb G
+    let byte5 = buf.readUInt8(5);//bulb B
+    let byte6 = buf.readUInt8(6);//bulb temperature
+    let byte7 = buf.readUInt8(7);
+    let byte8 = buf.readUInt8(8);
+    let byte9 = buf.readUInt8(9);
+    let byte10 = buf.readUInt8(10);//bulb mode
+
+    let power = byte1;
+    let red = byte3;
+    let green = byte4;
+    let blue = byte5;
+    let color_temperature = byte6;
+    let state = byte7 & 0b01111111 ? true : false;
+    let brightness = byte7 & 0b01111111;
+    let delay = byte8 & 0b10000000;
+    let preset = byte8 & 0b00001000;
+    let color_mode = byte8 & 0b00000111;
+    let speed = byte9 & 0b01111111;
+    let loop_index = byte10 & 0b11111110;
+
+    let data = {
       model: "u",
       modelName: "WoBulb",
       color_temperature: color_temperature,
@@ -427,22 +427,22 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte9 = buf.readUInt8(9); // byte9:  plug mini state; 0x00=off, 0x80=on
-    const byte10 = buf.readUInt8(10); // byte10: bit0: 0=no delay,1=delay, bit1:0=no timer, 1=timer; bit2:0=no sync time, 1=sync'ed time
-    const byte11 = buf.readUInt8(11); // byte11: wifi rssi
-    const byte12 = buf.readUInt8(12); // byte12: bit7: overload?
-    const byte13 = buf.readUInt8(13); // byte12[bit0~6] + byte13: current power value
-
-    const state = byte9 === 0x00 ? "off" : byte9 === 0x80 ? "on" : null;
-    const delay = !!(byte10 & 0b00000001);
-    const timer = !!(byte10 & 0b00000010);
-    const syncUtcTime = !!(byte10 & 0b00000100);
-    const wifiRssi = byte11;
-    const overload = !!(byte12 & 0b10000000);
-    const currentPower = (((byte12 & 0b01111111) << 8) + byte13) / 10; // in watt
+    let byte9 = buf.readUInt8(9); // byte9:  plug mini state; 0x00=off, 0x80=on
+    let byte10 = buf.readUInt8(10); // byte10: bit0: 0=no delay,1=delay, bit1:0=no timer, 1=timer; bit2:0=no sync time, 1=sync'ed time
+    let byte11 = buf.readUInt8(11); // byte11: wifi rssi
+    let byte12 = buf.readUInt8(12); // byte12: bit7: overload?
+    let byte13 = buf.readUInt8(13); // byte12[bit0~6] + byte13: current power value
+
+    let state = byte9 === 0x00 ? "off" : byte9 === 0x80 ? "on" : null;
+    let delay = !!(byte10 & 0b00000001);
+    let timer = !!(byte10 & 0b00000010);
+    let syncUtcTime = !!(byte10 & 0b00000100);
+    let wifiRssi = byte11;
+    let overload = !!(byte12 & 0b10000000);
+    let currentPower = (((byte12 & 0b01111111) << 8) + byte13) / 10; // in watt
     // TODO: voltage ???
 
-    const data = {
+    let data = {
       model: "g",
       modelName: "WoPlugMini",
       state: state,
@@ -466,22 +466,22 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte9 = buf.readUInt8(9); // byte9:  plug mini state; 0x00=off, 0x80=on
-    const byte10 = buf.readUInt8(10); // byte10: bit0: 0=no delay,1=delay, bit1:0=no timer, 1=timer; bit2:0=no sync time, 1=sync'ed time
-    const byte11 = buf.readUInt8(11); // byte11: wifi rssi
-    const byte12 = buf.readUInt8(12); // byte12: bit7: overload?
-    const byte13 = buf.readUInt8(13); // byte12[bit0~6] + byte13: current power value
-
-    const state = byte9 === 0x00 ? "off" : byte9 === 0x80 ? "on" : null;
-    const delay = !!(byte10 & 0b00000001);
-    const timer = !!(byte10 & 0b00000010);
-    const syncUtcTime = !!(byte10 & 0b00000100);
-    const wifiRssi = byte11;
-    const overload = !!(byte12 & 0b10000000);
-    const currentPower = (((byte12 & 0b01111111) << 8) + byte13) / 10; // in watt
+    let byte9 = buf.readUInt8(9); // byte9:  plug mini state; 0x00=off, 0x80=on
+    let byte10 = buf.readUInt8(10); // byte10: bit0: 0=no delay,1=delay, bit1:0=no timer, 1=timer; bit2:0=no sync time, 1=sync'ed time
+    let byte11 = buf.readUInt8(11); // byte11: wifi rssi
+    let byte12 = buf.readUInt8(12); // byte12: bit7: overload?
+    let byte13 = buf.readUInt8(13); // byte12[bit0~6] + byte13: current power value
+
+    let state = byte9 === 0x00 ? "off" : byte9 === 0x80 ? "on" : null;
+    let delay = !!(byte10 & 0b00000001);
+    let timer = !!(byte10 & 0b00000010);
+    let syncUtcTime = !!(byte10 & 0b00000100);
+    let wifiRssi = byte11;
+    let overload = !!(byte12 & 0b10000000);
+    let currentPower = (((byte12 & 0b01111111) << 8) + byte13) / 10; // in watt
     // TODO: voltage ???
 
-    const data = {
+    let data = {
       model: "j",
       modelName: "WoPlugMini",
       state: state,
@@ -505,13 +505,13 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte1 = buf.readUInt8(1);
-    const byte2 = buf.readUInt8(2);
+    let byte1 = buf.readUInt8(1);
+    let byte2 = buf.readUInt8(2);
 
-    const movement = (byte1 & 0b01000000) ? true : false; // 1 - Movement detected
-    const battery = byte2 & 0b01111111; // %
+    let movement = (byte1 & 0b01000000) ? true : false; // 1 - Movement detected
+    let battery = byte2 & 0b01111111; // %
 
-    const data = {
+    let data = {
       model: "o",
       modelName: "WoSmartLock",
       battery: battery,
@@ -530,17 +530,17 @@ class SwitchbotAdvertising {
       }
       return null;
     }
-    const byte2 = buf.readUInt8(2);
-    const byte3 = buf.readUInt8(3);
-    const byte4 = buf.readUInt8(4);
-    const byte5 = buf.readUInt8(5);
-
-    const temp_sign = byte4 & 0b10000000 ? 1 : -1;
-    const temp_c = temp_sign * ((byte4 & 0b01111111) + (byte3 & 0b00001111) / 10);
-    const temp_f = (temp_c * 9 / 5) + 32;
+    let byte2 = buf.readUInt8(2);
+    let byte3 = buf.readUInt8(3);
+    let byte4 = buf.readUInt8(4);
+    let byte5 = buf.readUInt8(5);
+
+    let temp_sign = byte4 & 0b10000000 ? 1 : -1;
+    let temp_c = temp_sign * ((byte4 & 0b01111111) + (byte3 & 0b00001111) / 10);
+    let temp_f = (temp_c * 9 / 5) + 32;
     temp_f = Math.round(temp_f * 10) / 10;
 
-    const data = {
+    let data = {
       model: "i",
       modelName: "WoSensorTHPlus",
       temperature: {
@@ -565,28 +565,28 @@ class SwitchbotAdvertising {
       return null;
     }
 
-    const byte1 = buf.readUInt8(1);//power and light status
-    const byte2 = buf.readUInt8(2);//bulb brightness
-    const byte3 = buf.readUInt8(3);//bulb R
-    const byte4 = buf.readUInt8(4);//bulb G
-    const byte5 = buf.readUInt8(5);//bulb B
-    const byte7 = buf.readUInt8(7);
-    const byte8 = buf.readUInt8(8);
-    const byte9 = buf.readUInt8(9);
-    const byte10 = buf.readUInt8(10);
-
-    const state = byte7 & 0b10000000 ? true : false;
-    const brightness = byte7 & 0b01111111;
-    const red = byte3;
-    const green = byte4;
-    const blue = byte5;
-    const delay = byte8 & 0b10000000;
-    const preset = byte8 & 0b00001000;
-    const color_mode = byte8 & 0b00000111;
-    const speed = byte9 & 0b01111111;
-    const loop_index = byte10 & 0b11111110;
-
-    const data = {
+    let byte1 = buf.readUInt8(1);//power and light status
+    let byte2 = buf.readUInt8(2);//bulb brightness
+    let byte3 = buf.readUInt8(3);//bulb R
+    let byte4 = buf.readUInt8(4);//bulb G
+    let byte5 = buf.readUInt8(5);//bulb B
+    let byte7 = buf.readUInt8(7);
+    let byte8 = buf.readUInt8(8);
+    let byte9 = buf.readUInt8(9);
+    let byte10 = buf.readUInt8(10);
+
+    let state = byte7 & 0b10000000 ? true : false;
+    let brightness = byte7 & 0b01111111;
+    let red = byte3;
+    let green = byte4;
+    let blue = byte5;
+    let delay = byte8 & 0b10000000;
+    let preset = byte8 & 0b00001000;
+    let color_mode = byte8 & 0b00000111;
+    let speed = byte9 & 0b01111111;
+    let loop_index = byte10 & 0b11111110;
+
+    let data = {
       model: "r",
       modelName: "WoStrip",
       state: state,
diff --git a/lib/switchbot-device-wobulb.js b/lib/switchbot-device-wobulb.js
index cb0e2a7e..3146709c 100644
--- a/lib/switchbot-device-wobulb.js
+++ b/lib/switchbot-device-wobulb.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 /**
  * @see https://github.com/OpenWonderLabs/SwitchBotAPI-BLE/blob/latest/devicetypes/colorbulb.md
@@ -16,7 +16,7 @@ class SwitchbotDeviceWoBulb extends SwitchbotDevice {
    * @private
    */
   _setState(reqByteArray) {
-    const base = [0x57, 0x0f, 0x47, 0x01];
+    let base = [0x57, 0x0f, 0x47, 0x01];
     return this._operateBot([].concat(base, reqByteArray));
   }
 
@@ -149,15 +149,15 @@ class SwitchbotDeviceWoBulb extends SwitchbotDevice {
    * @private
    */
   _operateBot(bytes) {
-    const req_buf = Buffer.from(bytes);
+    let req_buf = Buffer.from(bytes);
     return new Promise((resolve, reject) => {
       this._command(req_buf)
         .then((res_bytes) => {
-          const res_buf = Buffer.from(res_bytes);
+          let res_buf = Buffer.from(res_bytes);
           if (res_buf.length === 2) {
-            const code = res_buf.readUInt8(1);
+            let code = res_buf.readUInt8(1);
             if (code === 0x00 || code === 0x80) {
-              const is_on = code === 0x80;
+              let is_on = code === 0x80;
               resolve(is_on);
             } else {
               reject(
diff --git a/lib/switchbot-device-wocontact.js b/lib/switchbot-device-wocontact.js
index 63443786..287959ae 100644
--- a/lib/switchbot-device-wocontact.js
+++ b/lib/switchbot-device-wocontact.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoContact extends SwitchbotDevice {}
 
diff --git a/lib/switchbot-device-wocurtain.js b/lib/switchbot-device-wocurtain.js
index 92ff56c3..727b5170 100644
--- a/lib/switchbot-device-wocurtain.js
+++ b/lib/switchbot-device-wocurtain.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoCurtain extends SwitchbotDevice {
   /* ------------------------------------------------------------------
@@ -93,10 +93,10 @@ class SwitchbotDeviceWoCurtain extends SwitchbotDevice {
 
   _operateCurtain(bytes) {
     return new Promise((resolve, reject) => {
-      const req_buf = Buffer.from(bytes);
+      let req_buf = Buffer.from(bytes);
       this._command(req_buf)
         .then((res_buf) => {
-          const code = res_buf.readUInt8(0);
+          let code = res_buf.readUInt8(0);
           if (res_buf.length === 3 && code === 0x01) {
             resolve();
           } else {
diff --git a/lib/switchbot-device-wohand.js b/lib/switchbot-device-wohand.js
index 3cd9378f..891da386 100644
--- a/lib/switchbot-device-wohand.js
+++ b/lib/switchbot-device-wohand.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoHand extends SwitchbotDevice {
   /* ------------------------------------------------------------------
@@ -79,10 +79,10 @@ class SwitchbotDeviceWoHand extends SwitchbotDevice {
 
   _operateBot(bytes) {
     return new Promise((resolve, reject) => {
-      const req_buf = Buffer.from(bytes);
+      let req_buf = Buffer.from(bytes);
       this._command(req_buf)
         .then((res_buf) => {
-          const code = res_buf.readUInt8(0);
+          let code = res_buf.readUInt8(0);
           if (res_buf.length === 3 && (code === 0x01 || code === 0x05)) {
             resolve();
           } else {
diff --git a/lib/switchbot-device-wohumi.js b/lib/switchbot-device-wohumi.js
index e7d055bd..82c8d3e9 100644
--- a/lib/switchbot-device-wohumi.js
+++ b/lib/switchbot-device-wohumi.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoHumi extends SwitchbotDevice {
   /* ------------------------------------------------------------------
@@ -79,10 +79,10 @@ class SwitchbotDeviceWoHumi extends SwitchbotDevice {
 
   _operateBot(bytes) {
     return new Promise((resolve, reject) => {
-      const req_buf = Buffer.from(bytes);
+      let req_buf = Buffer.from(bytes);
       this._command(req_buf)
         .then((res_buf) => {
-          const code = res_buf.readUInt8(0);
+          let code = res_buf.readUInt8(0);
           if (res_buf.length === 3 && (code === 0x01 || code === 0x05)) {
             resolve();
           } else {
diff --git a/lib/switchbot-device-woplugmini.js b/lib/switchbot-device-woplugmini.js
index 0e91068d..f156c24a 100644
--- a/lib/switchbot-device-woplugmini.js
+++ b/lib/switchbot-device-woplugmini.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 /**
  * @see https://github.com/OpenWonderLabs/SwitchBotAPI-BLE/blob/latest/devicetypes/plugmini.md
@@ -16,7 +16,7 @@ class SwitchbotDeviceWoPlugMini extends SwitchbotDevice {
    * @private
    */
   _setState(reqByteArray) {
-    const base = [0x57, 0x0f, 0x50, 0x01];
+    let base = [0x57, 0x0f, 0x50, 0x01];
     return this._operateBot([].concat(base, reqByteArray));
   }
 
@@ -45,15 +45,15 @@ class SwitchbotDeviceWoPlugMini extends SwitchbotDevice {
    * @private
    */
   _operateBot(bytes) {
-    const req_buf = Buffer.from(bytes);
+    let req_buf = Buffer.from(bytes);
     return new Promise((resolve, reject) => {
       this._command(req_buf)
         .then((res_bytes) => {
-          const res_buf = Buffer.from(res_bytes);
+          let res_buf = Buffer.from(res_bytes);
           if (res_buf.length === 2) {
-            const code = res_buf.readUInt8(1);
+            let code = res_buf.readUInt8(1);
             if (code === 0x00 || code === 0x80) {
-              const is_on = code === 0x80;
+              let is_on = code === 0x80;
               resolve(is_on);
             } else {
               reject(
diff --git a/lib/switchbot-device-wopresence.js b/lib/switchbot-device-wopresence.js
index e5f28ca9..f0cd5779 100644
--- a/lib/switchbot-device-wopresence.js
+++ b/lib/switchbot-device-wopresence.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoPresence extends SwitchbotDevice {}
 
diff --git a/lib/switchbot-device-wosensorth.js b/lib/switchbot-device-wosensorth.js
index 8f0579a5..340b42f5 100644
--- a/lib/switchbot-device-wosensorth.js
+++ b/lib/switchbot-device-wosensorth.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 class SwitchbotDeviceWoSensorTH extends SwitchbotDevice {}
 
diff --git a/lib/switchbot-device-wostrip.js b/lib/switchbot-device-wostrip.js
index db444e61..37516788 100644
--- a/lib/switchbot-device-wostrip.js
+++ b/lib/switchbot-device-wostrip.js
@@ -1,5 +1,5 @@
 "use strict";
-const SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDevice = require("./switchbot-device.js");
 
 /**
  * @see https://github.com/OpenWonderLabs/SwitchBotAPI-BLE/blob/latest/devicetypes/colorbulb.md
@@ -16,7 +16,7 @@ class SwitchbotDeviceWoStrip extends SwitchbotDevice {
    * @private
    */
   _setState(reqByteArray) {
-    const base = [0x57, 0x0f, 0x49, 0x01];
+    let base = [0x57, 0x0f, 0x49, 0x01];
     return this._operateBot([].concat(base, reqByteArray));
   }
 
@@ -143,15 +143,15 @@ class SwitchbotDeviceWoStrip extends SwitchbotDevice {
    * @private
    */
   _operateBot(bytes) {
-    const req_buf = Buffer.from(bytes);
+    let req_buf = Buffer.from(bytes);
     return new Promise((resolve, reject) => {
       this._command(req_buf)
         .then((res_bytes) => {
-          const res_buf = Buffer.from(res_bytes);
+          let res_buf = Buffer.from(res_bytes);
           if (res_buf.length === 2) {
-            const code = res_buf.readUInt8(1);
+            let code = res_buf.readUInt8(1);
             if (code === 0x00 || code === 0x80) {
-              const is_on = code === 0x80;
+              let is_on = code === 0x80;
               resolve(is_on);
             } else {
               reject(
diff --git a/lib/switchbot-device.js b/lib/switchbot-device.js
index a09e38e0..70bb33df 100644
--- a/lib/switchbot-device.js
+++ b/lib/switchbot-device.js
@@ -1,6 +1,6 @@
 "use strict";
-const parameterChecker = require("./parameter-checker.js");
-const switchbotAdvertising = require("./switchbot-advertising.js");
+let parameterChecker = require("./parameter-checker.js");
+let switchbotAdvertising = require("./switchbot-advertising.js");
 
 class SwitchbotDevice {
   /* ------------------------------------------------------------------
@@ -26,7 +26,7 @@ class SwitchbotDevice {
     this._COMMAND_TIMEOUT_MSEC = 3000;
 
     // Save the device information
-    const ad = switchbotAdvertising.parse(peripheral);
+    let ad = switchbotAdvertising.parse(peripheral);
     this._id = ad.id;
     this._address = ad.address;
     this._model = ad.serviceData.model;
@@ -105,7 +105,7 @@ class SwitchbotDevice {
       }
 
       // Check the connection state
-      const state = this.connectionState;
+      let state = this.connectionState;
       if (state === "connected") {
         resolve();
         return;
@@ -155,7 +155,7 @@ class SwitchbotDevice {
   _getCharacteristics() {
     return new Promise((resolve, reject) => {
       // Set timeout timer
-      const timer = setTimeout(() => {
+      let timer = setTimeout(() => {
         this._ondisconnect_internal = () => {};
         timer = null;
         reject(
@@ -179,20 +179,20 @@ class SwitchbotDevice {
 
       // Discover services and characteristics
       (async () => {
-        const service_list = await this._discoverServices();
+        let service_list = await this._discoverServices();
         if (!timer) {
           throw new Error("");
         }
 
-        const chars = {
+        let chars = {
           write: null,
           notify: null,
           device: null,
         };
 
-        for (const service of service_list) {
-          const char_list = await this._discoverCharacteristics(service);
-          for (const char of char_list) {
+        for (let service of service_list) {
+          let char_list = await this._discoverCharacteristics(service);
+          for (let char of char_list) {
             if (char.uuid === this._CHAR_UUID_WRITE) {
               chars.write = char;
             } else if (char.uuid === this._CHAR_UUID_NOTIFY) {
@@ -230,8 +230,8 @@ class SwitchbotDevice {
           return;
         }
 
-        const service = null;
-        for (const s of service_list) {
+        let service = null;
+        for (let s of service_list) {
           if (s.uuid === this._SERV_UUID_PRIMARY) {
             service = s;
             break;
@@ -260,7 +260,7 @@ class SwitchbotDevice {
 
   _subscribe() {
     return new Promise((resolve, reject) => {
-      const char = this._chars.notify;
+      let char = this._chars.notify;
       if (!char) {
         reject(new Error("No notify characteristic was found."));
         return;
@@ -280,7 +280,7 @@ class SwitchbotDevice {
 
   _unsubscribe() {
     return new Promise((resolve) => {
-      const char = this._chars.notify;
+      let char = this._chars.notify;
       if (!char) {
         resolve();
         return;
@@ -307,7 +307,7 @@ class SwitchbotDevice {
     return new Promise((resolve, reject) => {
       this._was_connected_explicitly = false;
       // Check the connection state
-      const state = this._peripheral.state;
+      let state = this._peripheral.state;
       if (state === "disconnected") {
         resolve();
         return;
@@ -351,7 +351,7 @@ class SwitchbotDevice {
    * ---------------------------------------------------------------- */
   getDeviceName() {
     return new Promise((resolve, reject) => {
-      const name = "";
+      let name = "";
       this._connect()
         .then(() => {
           if (!this._chars.device) {
@@ -392,7 +392,7 @@ class SwitchbotDevice {
   setDeviceName(name) {
     return new Promise((resolve, reject) => {
       // Check the parameters
-      const valid = parameterChecker.check(
+      let valid = parameterChecker.check(
         { name: name },
         {
           name: { required: true, type: "string", minBytes: 1, maxBytes: 100 },
@@ -404,7 +404,7 @@ class SwitchbotDevice {
         return;
       }
 
-      const buf = Buffer.from(name, "utf8");
+      let buf = Buffer.from(name, "utf8");
       this._connect()
         .then(() => {
           if (!this._chars.device) {
@@ -439,7 +439,7 @@ class SwitchbotDevice {
         return;
       }
 
-      const res_buf = null;
+      let res_buf = null;
 
       this._connect()
         .then(() => {
@@ -463,7 +463,7 @@ class SwitchbotDevice {
 
   _waitCommandResponse() {
     return new Promise((resolve, reject) => {
-      const timer = setTimeout(() => {
+      let timer = setTimeout(() => {
         timer = null;
         this._onnotify_internal = () => {};
         reject(new Error("COMMAND_TIMEOUT"));
@@ -484,7 +484,7 @@ class SwitchbotDevice {
   _read(char) {
     return new Promise((resolve, reject) => {
       // Set a timeout timer
-      const timer = setTimeout(() => {
+      let timer = setTimeout(() => {
         reject("READ_TIMEOUT");
       }, this._READ_TIMEOUT_MSEC);
 
@@ -507,7 +507,7 @@ class SwitchbotDevice {
   _write(char, buf) {
     return new Promise((resolve, reject) => {
       // Set a timeout timer
-      const timer = setTimeout(() => {
+      let timer = setTimeout(() => {
         reject("WRITE_TIMEOUT");
       }, this._WRITE_TIMEOUT_MSEC);
 
diff --git a/lib/switchbot.js b/lib/switchbot.js
index 474872ff..96afaf76 100644
--- a/lib/switchbot.js
+++ b/lib/switchbot.js
@@ -1,17 +1,17 @@
 "use strict";
-const parameterChecker = require("./parameter-checker.js");
-const switchbotAdvertising = require("./switchbot-advertising.js");
+let parameterChecker = require("./parameter-checker.js");
+let switchbotAdvertising = require("./switchbot-advertising.js");
 
-const SwitchbotDevice = require("./switchbot-device.js");
-const SwitchbotDeviceWoHand = require("./switchbot-device-wohand.js");
-const SwitchbotDeviceWoCurtain = require("./switchbot-device-wocurtain.js");
-const SwitchbotDeviceWoPresence = require("./switchbot-device-wopresence.js");
-const SwitchbotDeviceWoContact = require("./switchbot-device-wocontact.js");
-const SwitchbotDeviceWoSensorTH = require("./switchbot-device-wosensorth.js");
-const SwitchbotDeviceWoHumi = require("./switchbot-device-wohumi.js");
-const SwitchbotDeviceWoPlugMini = require("./switchbot-device-woplugmini.js");
-const SwitchbotDeviceWoBulb = require("./switchbot-device-wobulb.js");
-const SwitchbotDeviceWoStrip = require("./switchbot-device-wostrip.js");
+let SwitchbotDevice = require("./switchbot-device.js");
+let SwitchbotDeviceWoHand = require("./switchbot-device-wohand.js");
+let SwitchbotDeviceWoCurtain = require("./switchbot-device-wocurtain.js");
+let SwitchbotDeviceWoPresence = require("./switchbot-device-wopresence.js");
+let SwitchbotDeviceWoContact = require("./switchbot-device-wocontact.js");
+let SwitchbotDeviceWoSensorTH = require("./switchbot-device-wosensorth.js");
+let SwitchbotDeviceWoHumi = require("./switchbot-device-wohumi.js");
+let SwitchbotDeviceWoPlugMini = require("./switchbot-device-woplugmini.js");
+let SwitchbotDeviceWoBulb = require("./switchbot-device-wobulb.js");
+let SwitchbotDeviceWoStrip = require("./switchbot-device-wostrip.js");
 
 class Switchbot {
   /* ------------------------------------------------------------------
@@ -26,7 +26,7 @@ class Switchbot {
    * ---------------------------------------------------------------- */
   constructor(params) {
     // Check parameters
-    const noble = null;
+    let noble = null;
     if (params && params.noble) {
       noble = params.noble;
     } else {
@@ -83,9 +83,9 @@ class Switchbot {
    *   `SwitchbotDevice` objects representing the found devices.
    * ---------------------------------------------------------------- */
   discover(params = {}) {
-    const promise = new Promise((resolve, reject) => {
+    let promise = new Promise((resolve, reject) => {
       // Check the parameters
-      const valid = parameterChecker.check(
+      let valid = parameterChecker.check(
         params,
         {
           duration: { required: false, type: "integer", min: 1, max: 60000 },
@@ -110,7 +110,7 @@ class Switchbot {
       }
 
       // Determine the values of the parameters
-      const p = {
+      let p = {
         duration: params.duration || this._DEFAULT_DISCOVERY_DURATION,
         model: params.model || "",
         id: params.id || "",
@@ -120,16 +120,16 @@ class Switchbot {
       // Initialize the noble object
       this._init()
         .then(() => {
-          const peripherals = {};
-          const timer = null;
-          const finishDiscovery = () => {
+          let peripherals = {};
+          let timer = null;
+          let finishDiscovery = () => {
             if (timer) {
               clearTimeout(timer);
             }
             this.noble.removeAllListeners("discover");
             this.noble.stopScanning();
-            const device_list = [];
-            for (const addr in peripherals) {
+            let device_list = [];
+            for (let addr in peripherals) {
               device_list.push(peripherals[addr]);
             }
             resolve(device_list);
@@ -137,11 +137,11 @@ class Switchbot {
 
           // Set a handler for the 'discover' event
           this.noble.on("discover", (peripheral) => {
-            const device = this._getDeviceObject(peripheral, p.id, p.model);
+            let device = this._getDeviceObject(peripheral, p.id, p.model);
             if (!device) {
               return;
             }
-            const id = device.id;
+            let id = device.id;
             peripherals[id] = device;
 
             if (this.ondiscover && typeof this.ondiscover === "function") {
@@ -177,13 +177,13 @@ class Switchbot {
   }
 
   _init() {
-    const promise = new Promise((resolve, reject) => {
+    let promise = new Promise((resolve, reject) => {
       switch (this.noble.state) {
         case "poweredOn":
           resolve();
           return;
         case ("unsupported", "unauthorized", "poweredOff"):
-          const err = new Error(
+          let err = new Error(
             "Failed to initialize the Noble object: " + this.noble.state
           );
           reject(err);
@@ -193,7 +193,7 @@ class Switchbot {
             if (state === "poweredOn") {
               resolve();
             } else {
-              const err = new Error(
+              let err = new Error(
                 "Failed to initialize the Noble object: " + state
               );
               reject(err);
@@ -205,9 +205,9 @@ class Switchbot {
   }
 
   _getDeviceObject(peripheral, id, model) {
-    const ad = switchbotAdvertising.parse(peripheral, this.onlog);
+    let ad = switchbotAdvertising.parse(peripheral, this.onlog);
     if (this._filterAdvertising(ad, id, model)) {
-      const device = null;
+      let device = null;
       switch (ad.serviceData.model) {
         case "H":
           device = new SwitchbotDeviceWoHand(peripheral, this.noble);
@@ -258,7 +258,7 @@ class Switchbot {
     }
     if (id) {
       id = id.toLowerCase().replace(/\:/g, "");
-      const ad_id = ad.address.toLowerCase().replace(/[^a-z0-9]/g, "");
+      let ad_id = ad.address.toLowerCase().replace(/[^a-z0-9]/g, "");
       if (ad_id !== id) {
         return false;
       }
@@ -324,9 +324,9 @@ class Switchbot {
    *   Nothing will be passed to the `resolve()`.
    * ---------------------------------------------------------------- */
   startScan(params) {
-    const promise = new Promise((resolve, reject) => {
+    let promise = new Promise((resolve, reject) => {
       // Check the parameters
-      const valid = parameterChecker.check(
+      let valid = parameterChecker.check(
         params,
         {
           model: {
@@ -352,14 +352,14 @@ class Switchbot {
       this._init()
         .then(() => {
           // Determine the values of the parameters
-          const p = {
+          let p = {
             model: params.model || "",
             id: params.id || "",
           };
 
           // Set a handler for the 'discover' event
           this.noble.on("discover", (peripheral) => {
-            const ad = switchbotAdvertising.parse(peripheral, this.onlog);
+            let ad = switchbotAdvertising.parse(peripheral, this.onlog);
             if (this._filterAdvertising(ad, p.id, p.model)) {
               if (
                 this.onadvertisement &&
@@ -419,7 +419,7 @@ class Switchbot {
   wait(msec) {
     return new Promise((resolve, reject) => {
       // Check the parameters
-      const valid = parameterChecker.check(
+      let valid = parameterChecker.check(
         { msec: msec },
         {
           msec: { required: true, type: "integer", min: 0 },
diff --git a/package-lock.json b/package-lock.json
index f557df39..2dc84239 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "node-switchbot",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "node-switchbot",
-      "version": "1.6.0",
+      "version": "1.6.1",
       "license": "MIT",
       "dependencies": {
         "@abandonware/noble": "^1.9.2-15"
@@ -2229,27 +2229,30 @@
       }
     },
     "node_modules/npm-package-arg": {
-      "version": "9.1.2",
-      "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-9.1.2.tgz",
-      "integrity": "sha512-pzd9rLEx4TfNJkovvlBSLGhq31gGu2QDexFPWT19yCDh0JgnRhlBLNo5759N0AJmBk+kQ9Y/hXoLnlgFD+ukmg==",
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-10.0.0.tgz",
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       "dev": true,
       "dependencies": {
-        "hosted-git-info": "^5.0.0",
-        "proc-log": "^2.0.1",
+        "hosted-git-info": "^6.0.0",
+        "proc-log": "^3.0.0",
         "semver": "^7.3.5",
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+        "validate-npm-package-name": "^5.0.0"
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-        "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
+        "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
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+    "node_modules/npm-package-arg/node_modules/hosted-git-info": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-6.0.0.tgz",
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-        "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
+        "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
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@@ -2279,45 +2282,6 @@
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@@ -2336,18 +2300,6 @@
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       "resolved": "https://registry.npmjs.org/make-fetch-happen/-/make-fetch-happen-11.0.1.tgz",
@@ -2392,33 +2344,6 @@
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-      "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-10.0.0.tgz",
-      "integrity": "sha512-7dkh8mRp7s0KwVHKIVJnFCJQ2B34gOGnzgBjDGyprycmARq/82SX/lhilQ95ZuacP/G/1gsS345iAkKmxWBQ2Q==",
-      "dev": true,
-      "dependencies": {
-        "hosted-git-info": "^6.0.0",
-        "proc-log": "^3.0.0",
-        "semver": "^7.3.5",
-        "validate-npm-package-name": "^5.0.0"
-      },
-      "engines": {
-        "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
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-    },
-    "node_modules/npm-registry-fetch/node_modules/validate-npm-package-name": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-5.0.0.tgz",
-      "integrity": "sha512-YuKoXDAhBYxY7SfOKxHBDoSyENFeW5VvIIQp2TGQuit8gpK6MnWaQelBKxso72DoxTZfZdcP3W90LqpSkgPzLQ==",
-      "dev": true,
-      "dependencies": {
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-      },
-      "engines": {
-        "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
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     "node_modules/npmlog": {
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       "resolved": "https://registry.npmjs.org/npmlog/-/npmlog-5.0.1.tgz",
@@ -2522,9 +2447,9 @@
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-      "resolved": "https://registry.npmjs.org/pacote/-/pacote-15.0.1.tgz",
-      "integrity": "sha512-91Po/ZZE5fIEkbesHwsZPNae7SczIN8pSD2od96NMCfA2gGzdeEVY4CAFfXZKi+lfSEOlFIsKadRrYPj7nR/PA==",
+      "version": "15.0.2",
+      "resolved": "https://registry.npmjs.org/pacote/-/pacote-15.0.2.tgz",
+      "integrity": "sha512-Gj4w436jiM9/0574JGI8nxpsuXssp5OhyBhnWijvzUVJdU5GvNvnYUgd5WA6mr6ImOQ7JqWqdA44ixBqqMfyZQ==",
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@@ -2534,7 +2459,7 @@
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         "fs-minipass": "^2.1.0",
         "minipass": "^3.1.6",
-        "npm-package-arg": "^9.0.0",
+        "npm-package-arg": "^10.0.0",
         "npm-packlist": "^7.0.0",
         "npm-pick-manifest": "^8.0.0",
         "npm-registry-fetch": "^14.0.0",
@@ -3370,15 +3295,15 @@
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-      "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-4.0.0.tgz",
-      "integrity": "sha512-mzR0L8ZDktZjpX4OB46KT+56MAhl4EIazWP/+G/HPGuvfdaqg4YsCdtOm6U9+LOFyYDoh4dpnpxZRB9MQQns5Q==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-5.0.0.tgz",
+      "integrity": "sha512-YuKoXDAhBYxY7SfOKxHBDoSyENFeW5VvIIQp2TGQuit8gpK6MnWaQelBKxso72DoxTZfZdcP3W90LqpSkgPzLQ==",
       "dev": true,
       "dependencies": {
         "builtins": "^5.0.0"
       },
       "engines": {
-        "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
+        "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
       }
     },
     "node_modules/webidl-conversions": {
@@ -5260,22 +5185,25 @@
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     },
     "npm-package-arg": {
-      "version": "9.1.2",
-      "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-9.1.2.tgz",
-      "integrity": "sha512-pzd9rLEx4TfNJkovvlBSLGhq31gGu2QDexFPWT19yCDh0JgnRhlBLNo5759N0AJmBk+kQ9Y/hXoLnlgFD+ukmg==",
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-10.0.0.tgz",
+      "integrity": "sha512-7dkh8mRp7s0KwVHKIVJnFCJQ2B34gOGnzgBjDGyprycmARq/82SX/lhilQ95ZuacP/G/1gsS345iAkKmxWBQ2Q==",
       "dev": true,
       "requires": {
-        "hosted-git-info": "^5.0.0",
-        "proc-log": "^2.0.1",
+        "hosted-git-info": "^6.0.0",
+        "proc-log": "^3.0.0",
         "semver": "^7.3.5",
-        "validate-npm-package-name": "^4.0.0"
+        "validate-npm-package-name": "^5.0.0"
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-        "proc-log": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/proc-log/-/proc-log-2.0.1.tgz",
-          "integrity": "sha512-Kcmo2FhfDTXdcbfDH76N7uBYHINxc/8GW7UAVuVP9I+Va3uHSerrnKV6dLooga/gh7GlgzuCCr/eoldnL1muGw==",
-          "dev": true
+        "hosted-git-info": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-6.0.0.tgz",
+          "integrity": "sha512-NURrKJX36ihI69iCqcvN4uuIk9fHcc1C+uax/5fPh4Tr5WJnATir+QM/CMJNKrcOOvxQDsAdS5C9oJliM80X7g==",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^7.5.1"
+          }
         }
       }
     },
@@ -5298,38 +5226,6 @@
         "npm-normalize-package-bin": "^3.0.0",
         "npm-package-arg": "^10.0.0",
         "semver": "^7.3.5"
-      },
-      "dependencies": {
-        "hosted-git-info": {
-          "version": "6.0.0",
-          "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-6.0.0.tgz",
-          "integrity": "sha512-NURrKJX36ihI69iCqcvN4uuIk9fHcc1C+uax/5fPh4Tr5WJnATir+QM/CMJNKrcOOvxQDsAdS5C9oJliM80X7g==",
-          "dev": true,
-          "requires": {
-            "lru-cache": "^7.5.1"
-          }
-        },
-        "npm-package-arg": {
-          "version": "10.0.0",
-          "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-10.0.0.tgz",
-          "integrity": "sha512-7dkh8mRp7s0KwVHKIVJnFCJQ2B34gOGnzgBjDGyprycmARq/82SX/lhilQ95ZuacP/G/1gsS345iAkKmxWBQ2Q==",
-          "dev": true,
-          "requires": {
-            "hosted-git-info": "^6.0.0",
-            "proc-log": "^3.0.0",
-            "semver": "^7.3.5",
-            "validate-npm-package-name": "^5.0.0"
-          }
-        },
-        "validate-npm-package-name": {
-          "version": "5.0.0",
-          "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-5.0.0.tgz",
-          "integrity": "sha512-YuKoXDAhBYxY7SfOKxHBDoSyENFeW5VvIIQp2TGQuit8gpK6MnWaQelBKxso72DoxTZfZdcP3W90LqpSkgPzLQ==",
-          "dev": true,
-          "requires": {
-            "builtins": "^5.0.0"
-          }
-        }
       }
     },
     "npm-registry-fetch": {
@@ -5347,15 +5243,6 @@
         "proc-log": "^3.0.0"
       },
       "dependencies": {
-        "hosted-git-info": {
-          "version": "6.0.0",
-          "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-6.0.0.tgz",
-          "integrity": "sha512-NURrKJX36ihI69iCqcvN4uuIk9fHcc1C+uax/5fPh4Tr5WJnATir+QM/CMJNKrcOOvxQDsAdS5C9oJliM80X7g==",
-          "dev": true,
-          "requires": {
-            "lru-cache": "^7.5.1"
-          }
-        },
         "make-fetch-happen": {
           "version": "11.0.1",
           "resolved": "https://registry.npmjs.org/make-fetch-happen/-/make-fetch-happen-11.0.1.tgz",
@@ -5391,27 +5278,6 @@
             "minipass-sized": "^1.0.3",
             "minizlib": "^2.1.2"
           }
-        },
-        "npm-package-arg": {
-          "version": "10.0.0",
-          "resolved": "https://registry.npmjs.org/npm-package-arg/-/npm-package-arg-10.0.0.tgz",
-          "integrity": "sha512-7dkh8mRp7s0KwVHKIVJnFCJQ2B34gOGnzgBjDGyprycmARq/82SX/lhilQ95ZuacP/G/1gsS345iAkKmxWBQ2Q==",
-          "dev": true,
-          "requires": {
-            "hosted-git-info": "^6.0.0",
-            "proc-log": "^3.0.0",
-            "semver": "^7.3.5",
-            "validate-npm-package-name": "^5.0.0"
-          }
-        },
-        "validate-npm-package-name": {
-          "version": "5.0.0",
-          "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-5.0.0.tgz",
-          "integrity": "sha512-YuKoXDAhBYxY7SfOKxHBDoSyENFeW5VvIIQp2TGQuit8gpK6MnWaQelBKxso72DoxTZfZdcP3W90LqpSkgPzLQ==",
-          "dev": true,
-          "requires": {
-            "builtins": "^5.0.0"
-          }
         }
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@@ -5488,9 +5354,9 @@
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     "pacote": {
-      "version": "15.0.1",
-      "resolved": "https://registry.npmjs.org/pacote/-/pacote-15.0.1.tgz",
-      "integrity": "sha512-91Po/ZZE5fIEkbesHwsZPNae7SczIN8pSD2od96NMCfA2gGzdeEVY4CAFfXZKi+lfSEOlFIsKadRrYPj7nR/PA==",
+      "version": "15.0.2",
+      "resolved": "https://registry.npmjs.org/pacote/-/pacote-15.0.2.tgz",
+      "integrity": "sha512-Gj4w436jiM9/0574JGI8nxpsuXssp5OhyBhnWijvzUVJdU5GvNvnYUgd5WA6mr6ImOQ7JqWqdA44ixBqqMfyZQ==",
       "dev": true,
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@@ -5500,7 +5366,7 @@
         "cacache": "^17.0.0",
         "fs-minipass": "^2.1.0",
         "minipass": "^3.1.6",
-        "npm-package-arg": "^9.0.0",
+        "npm-package-arg": "^10.0.0",
         "npm-packlist": "^7.0.0",
         "npm-pick-manifest": "^8.0.0",
         "npm-registry-fetch": "^14.0.0",
@@ -6112,9 +5978,9 @@
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     "validate-npm-package-name": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-4.0.0.tgz",
-      "integrity": "sha512-mzR0L8ZDktZjpX4OB46KT+56MAhl4EIazWP/+G/HPGuvfdaqg4YsCdtOm6U9+LOFyYDoh4dpnpxZRB9MQQns5Q==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/validate-npm-package-name/-/validate-npm-package-name-5.0.0.tgz",
+      "integrity": "sha512-YuKoXDAhBYxY7SfOKxHBDoSyENFeW5VvIIQp2TGQuit8gpK6MnWaQelBKxso72DoxTZfZdcP3W90LqpSkgPzLQ==",
       "dev": true,
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diff --git a/package.json b/package.json
index 1c61d00d..e6b9391a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-switchbot",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "description": "The node-switchbot is a Node.js module which allows you to control your Switchbot Devices through Bluetooth (BLE).",
   "main": "./lib/switchbot.js",
   "files": [