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Common.h New Version Feb 22, 2018
ESPRFLINKMQTT.png Image Feb 22, 2018 New Version Feb 22, 2018
Rflink.cpp New Version Feb 22, 2018
Rflink.h New Version Feb 22, 2018
RflinkToJsonMqtt.ino New Version Feb 22, 2018


RFLink is a cool solution to work with 433 MHz gadgets, like remote-controlled Poweroutlets.

FHEM is a cool software for homeautomation.

Since there is no module in FHEM available i was searching for a way to use RFLink from FHEM.

My first try was RflinkToJsonMqtt which didn't work with FHEM like expected.

So i created a new solution based on the module from @github/jit06 .

Use it at your own risk!


  • You need a working RFLink-Hardware
  • Edit common.h line 23-36 to your need. (SSID,Wifi Password and Broker)
  • compile and upload to a NodeMCU or ESP8266 Board
  • Wire the NodeMCU like shown in ESPRFLINKMQTT.png
  • Use a mqtt client to subscribe to RFLink\# and see what happens
  • Use your remote to send some commands to your devices or wait until your gadgets send some data
  • The Hardware Serial from your ESP is used for debugging, the software-serial used to connect to the rflink

How to use

when RFLink receives something this is presented on the serial line eg.:


This software published this to the topics:


as json like this:


This is the raw string

For FHEM this is hard to parse, so my module publishes also this topics with the coresponding values:


The corresponding FHEM-Device looks like this:

define Xiron_2801 MQTT_DEVICE
attr Xiron_2801 IODev Mosquitto195
attr Xiron_2801 autoSubscribeReadings RFLink/Xiron/2801/+
attr Xiron_2801 stateFormat TEMP °C

How to send commands


publish the command according to the documentation to the topic





This is a beta software, use it at your own risk!!!