Tuya Smart air box (co2) #7299

Zagitta · 2021-05-02T19:43:38Z

Zagitta
May 2, 2021
Sponsor

Hello!

Have anyone had a look at adding support for this tuya CO2 detector?
It seems very cheap and nice compared to a lot of the other CO2 detectors so I'm very curious about the exact capabilities and performance. I'll probably buy one myself to test out but how hard will it be to add support without the tuya gateway?

Zagitta · 2021-05-16T09:35:02Z

Zagitta
May 16, 2021
Author Sponsor

So I received the device today and here are some observations:

It's powered by USB and comes with a short USB cable which seems rather inconvenient
Naturally it comes up as unsupported device when pairing
Out of the box it seems very chatty, but the reporting intervals can probably be turned down in the device converter
It's using tuya specific communication as show in the log below

debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,0],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,104],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,239],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,2,75],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":2}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,0],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":2}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,105],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":2}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,236],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,2,75],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,237],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,2,69],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,2],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,115],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,239],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,2,70],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,2],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,115],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":1}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,238],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,2,76],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":2}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,0],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":2}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,105],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":2}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,237],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0
debug Received Zigbee message from '0x60a423fffed20fe0', type 'commandGetData', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,2,70],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":0}' from endpoint 1 with groupID 0

I'm gonna be working on reverse engineering this over the coming week.

0 replies

Zagitta · 2021-05-16T15:37:52Z

Zagitta
May 16, 2021
Author Sponsor

Here's my current external converter:

const fz = require("zigbee-herdsman-converters/converters/fromZigbee");
const tz = require("zigbee-herdsman-converters/converters/toZigbee");
const exposes = require("zigbee-herdsman-converters/lib/exposes");
const {
  calibrateAndPrecisionRoundOptions,
} = require("zigbee-herdsman-converters/lib/utils");
const reporting = require("zigbee-herdsman-converters/lib/reporting");
const extend = require("zigbee-herdsman-converters/lib/extend");
const tuya = require("zigbee-herdsman-converters/lib/tuya");
const e = exposes.presets;
const ea = exposes.access;

const definition = {
  // Since a lot of Tuya devices use the same modelID, but use different data points
  // it's usually necessary to provide a fingerprint instead of a zigbeeModel
  fingerprint: [
    {
      // The model ID from: Device with modelID 'TS0601' is not supported
      // You may need to add \u0000 at the end of the name in some cases
      modelID: "TS0601",
      // The manufacturer name from: Device with modelID 'TS0601' is not supported.
      manufacturerName: "_TZE200_8ygsuhe1",
    },
  ],
  model: "SEA802-Zigbee",
  vendor: "Tuya",
  description: "Smart air box",
  supports: "temperature, humidity",
  fromZigbee: [
    fz.ignore_basic_report,
    {
      cluster: "manuSpecificTuya",
      type: [
        "commandSetDataResponse",
        "commandGetData",
        "commandActiveStatusReport",
      ],
      convert: (model, msg, publish, options, meta) => {
        const dp = msg.data.dp;
        const value = tuya.getDataValue(msg.data.datatype, msg.data.data);

        switch (dp) {
          case 18:
            return {
              temperature: calibrateAndPrecisionRoundOptions(
                value / 10.0,
                options,
                "temperature"
              ),
            };
          case 19:
            return {
              humidity: calibrateAndPrecisionRoundOptions(
                value / 10.0,
                options,
                "humidity"
              ),
            };
          case 21:
            return { co2: value };
          case 22:
            return { voc: value };
          default:
            console.log(`smart air box dp ${dp} = ${value}`);
        }

        return null;
      },
    },
  ],
  toZigbee: [
    tz.tuya_data_point_test, // Another debug converter
  ],
  onEvent: tuya.setTime, // Add this if you are getting no converter for 'commandSetTimeRequest'
  meta: {
    configureKey: 1,
  },
  configure: async (device, coordinatorEndpoint, logger) => {
    const endpoint = device.getEndpoint(1);
    await bind(endpoint, coordinatorEndpoint, ["genBasic"]);
  },
  exposes: [e.temperature(), e.humidity(), e.co2(), e.voc()],
};

module.exports = definition;

The CO2 and VOC are still unknown. Furthermore according to the sales page:

Examination range:
Formaldehyde: 0-10.0 (mg/m3)
VOC: 0-99.9 (ppm)
Carbon dioxide: 0-1000 (ppm)
Temperature: 0-60 (℃)
Humidity: 0-95 (%)
It seems like there might be one more dp for formaldehyde I haven't seen yet.

1 reply

gio-dot May 16, 2021

I'm waiting one ordered past week. Thank you for sharing.

Zagitta · 2021-05-17T20:31:29Z

Zagitta
May 17, 2021
Author Sponsor

Some more investigation and restarting the device revealed another DP at 2. My guess is it's the formaldehyde mentioned in the spec as nothing I do to the device seems to change the raw value.

He's an example of my experimentation:

At the red line I placed the device on top of a tissue soaked in turpentine.
At the blue line I picked the device up and blew at it.

Clearly the co2 and voc sensors are correlated but DP 2 "unknown1" in the graph seems unaffected.

13 replies

meisterlampe May 24, 2021

In my case I want to record the values and this device is flooding my influxDB. Is it maybe possible to reduce write frequency to Influx in HA configuration.yaml?

gio-dot May 24, 2021

I'm not entirely sure I follow, what's the issue with the frequent update rate? At least I haven't noticed any adverse effects on my network yet but I also use a zig-ah-zig coordinator...

I don't want unuseful RF spam in my house. I have dozen of sensor that work properly.. I don't want that an ugly (and with very poor sensitivity and precision) sensor dirty my network.

gio-dot May 24, 2021

In my case I want to record the values and this device is flooding my influxDB. Is it maybe possible to reduce write frequency to Influx in HA configuration.yaml?

You can use a time throttle filter in homeassistant.

meisterlampe May 24, 2021

In my case I want to record the values and this device is flooding my influxDB. Is it maybe possible to reduce write frequency to Influx in HA configuration.yaml?

You can use a time throttle filter in homeassistant.

Thanks for the hint!

matbech Aug 16, 2021

For me the log with the latest convertor looks like that:

When the sensor is placed outdoors:

debug 2021-08-16 15:56:29: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,112],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":85}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:29: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":2,"hcho":1,"humidity":83,"linkquality":111,"temperature":19.6,"voc":368}'
debug 2021-08-16 15:56:30: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,3,62],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":86}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:30: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":2,"hcho":1,"humidity":83,"linkquality":108,"temperature":19.6,"voc":368}'
debug 2021-08-16 15:56:30: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,0],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":88}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:30: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":2,"hcho":0,"humidity":83,"linkquality":111,"temperature":19.6,"voc":368}'
debug 2021-08-16 15:56:30: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,0],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":91}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:30: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":2,"hcho":0,"humidity":83,"linkquality":111,"temperature":19.6,"voc":368}'
debug 2021-08-16 15:56:31: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":92}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:31: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":0,"humidity":83,"linkquality":108,"temperature":19.6,"voc":368}'
debug 2021-08-16 15:56:31: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,3,62],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":94}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:31: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":0,"humidity":83,"linkquality":108,"temperature":19.6,"voc":368}'
debug 2021-08-16 15:56:32: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,196],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":95}' from endpoint 1 with groupID 0
info  2021-08-16 15:56:32: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":0,"humidity":83,"linkquality":111,"temperature":19.6,"voc":368}'

When the sensor is placed indoors

14:11: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,2],"type":"Buffer"},"datatype":2,"dp":21,"fn":0,"status":0,"transid":184}' from endpoint 1 with groupID 0
info  2021-08-16 16:14:11: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":2,"humidity":86,"linkquality":135,"temperature":20.7,"voc":363}'
debug 2021-08-16 16:14:12: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,1],"type":"Buffer"},"datatype":2,"dp":2,"fn":0,"status":0,"transid":185}' from endpoint 1 with groupID 0
info  2021-08-16 16:14:12: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":2,"humidity":86,"linkquality":135,"temperature":20.7,"voc":363}'
debug 2021-08-16 16:14:12: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,1,107],"type":"Buffer"},"datatype":2,"dp":22,"fn":0,"status":0,"transid":186}' from endpoint 1 with groupID 0
info  2021-08-16 16:14:12: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":2,"humidity":86,"linkquality":132,"temperature":20.7,"voc":363}'
debug 2021-08-16 16:14:12: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,3,92],"type":"Buffer"},"datatype":2,"dp":19,"fn":0,"status":0,"transid":187}' from endpoint 1 with groupID 0
info  2021-08-16 16:14:12: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":2,"humidity":86,"linkquality":135,"temperature":20.7,"voc":363}'
debug 2021-08-16 16:14:12: Received Zigbee message from '0xa4c138a6bbe929a3', type 'commandSetDataResponse', cluster 'manuSpecificTuya', data '{"data":{"data":[0,0,0,207],"type":"Buffer"},"datatype":2,"dp":18,"fn":0,"status":0,"transid":188}' from endpoint 1 with groupID 0
info  2021-08-16 16:14:12: MQTT publish: topic 'zigbee2mqtt/0xa4c138a6bbe929a3', payload '{"co2":1,"hcho":2,"humidity":86,"linkquality":135,"temperature":20.7,"voc":363}'

Also my device identifies with this (different) manufacturer:
_TZE200_ryfmq5rl

To me it seems this version of the device only reports TVOC and the CO2 value seems to be something like an enum. Looking at the logs it also shows the voc value isn't changed at all regardless of the sensor placement.

gio-dot · 2021-05-29T08:27:01Z

gio-dot
May 29, 2021

I'm starting to think that this sensor is a real fake. I'm comparing it with a Sensair s8 and i see that it is totally insensitive to environment co2 variations. It can sense some co2 variation only if i breath very near it. My conclusion is that i will dismount it to use the case for some other application :). I will continue to use my self made sensor to measure Co2 and other raeadings...
Attached there is in green a Sensirion S8 graph during 24h in my house, in blue the Tuya airbox graph (it is placed near my S8 sensor).

8 replies

rindlerblabla Jun 1, 2021

Develco/Frient air quality sensor measures VOC.

https://www.zigbee2mqtt.io/devices/AQSZB-110.html

meisterlampe Jun 3, 2021

Thanks for the hint. I already decided to go the DIY-way and ordered a MH Z19 CO² sensor and will use an esp board to build my own sensor.

meisterlampe Jun 3, 2021

And sorry for getting a bit off topic in this discussion.

gio-dot Jun 3, 2021

Thanks for the hint. I already decided to go the DIY-way and ordered a MH Z19 CO² sensor and will use an esp board to build my own sensor.
If you still want to use zigbee i built this with my zigbee board (even with multiple sensors in only one device: co2, temp, humidity, pressure, gpl/methane):
https://gio-dot.github.io/Z1-Mini/multisensor-air-quality-co2

RubenKelevra Jun 11, 2021

Well, those devices need to be placed outside for the first 15 minutes of runtime, since they do a calibration with "clean" outside air.

I have a Bluetooth one that is probably the same chip and it works pretty well.

I finally got two of those devices, so as soon as this goes stable I can report back :)

jsiemek · 2021-06-09T11:35:13Z

jsiemek
Jun 9, 2021

@Zagitta
For me your external converter work from start!

VOC values look well:

Firs rise is after I put open marker in from of sensor.
Second rise I put napkin with nail enamel remover (acetone) in front of it.

Thank You!

0 replies

RubenKelevra · 2021-06-11T10:17:28Z

RubenKelevra
Jun 11, 2021

The units should actually be TVOC and eCO2 since both are measured with one sensor not separately.

2 replies

Zagitta Jun 13, 2021
Author Sponsor

Interesting, do you have some article or blog about this? I tried searching initially but couldn't find something that wasn't an academic exercise in of itself to read/understand.

But yeah you're probably right and I'll change the units around before I create a PR with the final converter

RubenKelevra Jul 11, 2021

Well, there's no way you can do this separately at this price point.

There's an adafruit sensor which does basically the same:

https://paradisetronic.com/de/sensoren/adafruit-ccs811-luftqualitaetssensor-voc-tvoc-eco2

RubenKelevra · 2021-07-11T00:44:21Z

RubenKelevra
Jul 11, 2021

Is there a chance to add a unit to the CH2O measurement?

Otherwise HomeAssistant doesn't do nice graphs:

0 replies

RubenKelevra · 2021-07-11T20:34:27Z

RubenKelevra
Jul 11, 2021

Okay the CH2O (formaldehyde) is completely bonkers.

It's just a calculation that if the TVOC is completely from formaldehyde, it would be this value.

This makes no sense and might scare some users, thinking that there's a formaldehyde source in their home - while the sensor is just reacting on any TVOC.

We should ignore this "measurement".

0 replies

RubenKelevra · 2021-08-14T00:33:09Z

RubenKelevra
Aug 14, 2021

I did some testing - closed the room for a day and start measuring with this sensor. Then I opened the window and pushed clean air from outside through a hepa + charcoal filter into the room.

So the sensor works fine. Sure it`s probably far away from accurate, but it gives a good enough indication that something is wrong with the air in a room and you should open a window. :)

0 replies

RubenKelevra · 2021-08-17T08:53:15Z

RubenKelevra
Aug 17, 2021

So I disassembled mine. There are two sensors: One for temperature/humidity and one for TVOC.

So it can only calculate eCO2 and there's no way it can measure VOC, CO2, or CH2O (formaldehyde). The units need to be changed and CH2O needs to be removed.

4 replies

geduxas Aug 28, 2021

I have same wifi version.. it's totally junk..

aarnaud Sep 1, 2021

do you know how reduce the report interval ?

RubenKelevra Nov 25, 2021

Dunno but the 1 second interval is absolutely annoying.

@Koenkk is there a way to send an sliding average every say 60 seconds to MQTT?

RubenKelevra Nov 25, 2021

I have same wifi version.. it's totally junk..

It's good enough for me to determine when the exhaust fan for the bathroom or the exhaust hood should be turned on.

Have it installed for two weeks now and work perfectly for this purpose.

dedors · 2021-11-24T17:47:43Z

dedors
Nov 24, 2021

My device never goes below 4 messages/sec and spams up to 10/s. It's pretty crazy. (TZE200_yvx5lh6k / round model)

Edit: more complaints about this: #8966

0 replies

Mirarkitty · 2022-05-11T10:07:39Z

Mirarkitty
May 11, 2022

I'll use this ticket to talk about the newer (?) Tuya sensor with PM25 detector.

The detector seems jammed against the bottom of the case... (So hard the board is bent and they couldn't fit all five screws)

Otherwise seems to have the same sensors but on a proper board?

2 replies

netweaver1970 May 11, 2022

Does this one behaves better or is it also trying to jam the zigbee network? If OK, you have a link to buy?

julianjwong May 13, 2022

Mine just got delivered today from Banggood. It's the Tuya 6 in 1 airbox https://m.banggood.com/Tuya-Zb-3_0-or-WIFI-Smart-6-In-1-Air-Box-PM2_5-Formaldehyde-VOC-CO2-Temperature-Humidity-Sensor-Alarm-Tester-p-1941225.html?utm_design=18&utm_click=6&utm_email=1652418793_3671_6&utm_source=emarsys&utm_medium=OrderConfirmReceipt&utm_campaign=trigger-logistics&utm_content=leander&sc_src=email_4320992&sc_eh=5c6cb846b31aee701&sc_llid=10668961&sc_lid=180720778&sc_uid=Z9pDXtWaLW

Unfortunately only appears via Home Assistant ZHA to have a temperature and VOC entity available.
Any hints on adding pm2.5, humidity, etc appreciated!

Mirarkitty · 2022-05-13T12:27:40Z

Mirarkitty
May 13, 2022

I'm pretty sure it's the one I opened above, did you upgrade your z2m? (git blah blah, npm ci etc)
It's pretty recently supported.

Otherwise, turn on 'debug' settings and check the log and make a ticket to support it. It will list the needed datapoints to support in the log.

1 reply

julianjwong May 14, 2022

I'm using ZHA so probably not fully supported yet. Logged a ticket here
zigpy/zha-device-handlers#1563

Tuya Smart air box (co2) #7299

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