WiFi MQTT Relay / Thermostat

£59.99 (Inc. VAT)
£49.99 (Ex. VAT)
163.00 Grams
Current Stock:

2nd Gen WiFi Relay / Thermostat

Multi-purpose relay board based on the ESP8266 WiFi SoC.

Perfect for remote heating an A/C systems control via nodeRED, openHAB and Android Tasker etc. 


  • 1 x 16A Relay
  • Powered by the popular ESP8266 WiFi SoC - (custom firmware upgradable)
  • OTA Firmware upload function
  • Powered direct from 110-240V AC via isolated on-board PSU
  • Built-in web server with mobile device friendly UI and
  • HTTP API to control
  • Thermostat function with weekly scheduling
  • Manual relay control via web interface
  • MQTT support (control & status)
  • NTP for network time and scheduling functionality
  • Web server settings: including HTTP port & authentication setup
  • Temperature sensor support - 1 x sensor included 
  • PCB dimensions: 87mm x 50mm
  • External Enclosure Dimensions: 90.2mm; X: 53.3mm; Z: 57.5mm
  • working temperature of 0°C > +45°C.
  • WiFi 2.4Ghz
  • CE Approved


NOTE: The board connects to and controls high voltage, knowledge and attention is required when installing.




  • WiFi relay board, fully assembled & testing
  • External Temperature Sensor probe - DS18B20 

Documentation & Setup Guide

Setup User Guide

Home Assistant Integration


GitHub ESP8266 Firmware & open-hardware design 


Related Blog Posts:


▼ Product video below is for the older 3ch version, however much of the MQTT control via nodeRED application is still relevant ▼