【Compatibility】 Flush mounting, easy to install and use.The is a WiFi enabled thermostat for underfloor boiler or water heating, allowing you to save a lot on your energy consumption and maximize your comfort.It is also fully functional without Wi-Fi. Output: current Imax 3A.This thermostat requires a 220V power supply and 2 wires in dry contact with the boiler to trigger the boiler.CE certified.【Smart Control via App/Voice】Take control of your WiFi Boiler Thermostat from anywhere and anytime via your smartphone or tablet using the tuya or smart life app.Easily connect the thermostat to voice assistant devices like Alexa or Google Home to use simple voice commands to control the thermostat.2.4 GHz Wi-Fi network required.【3 modes to choose from】 This WiFi Boiler Thermostat has a manual mode, a program mode and a vacation mode to meet your individual needs.Program mode offers 5/2, 6/1 and 7/0 day programming with 6 periods per day, heating your home to the right temperature only when needed with the program to save energy and costs on yourenergy bill.【Open Window Detection】The open window detection function makes it easier to save energy.Connected Boiler Thermostat will automatically turn off the heating to avoid wasting energy when the room is ventilated - by detecting a rapid drop in room temperature (such as when a door or window is left open).【More Functions】Temperature calibration, fan function, reset function, freeze protection, child lock, power off settings save function that all settings will be saved when power off,hysteresis adjustment, etc.Contents: 1 thermostat;2*screws;1*manual.