KETOTEK Smart Thermostat WiFi Black for Boiler 3A 220V with Dry Contact, Programmable Boiler Thermostat Controller Compatible with Alexa, Tuya/Smart Life App Control

Product description

• Compatibility the WiFi thermostat is flush-mounted and compatible with most boiler water underfloor heating systems. It uses dry contacts to control the boiler's start stop the dry contacts are voltage-free, don't supply power to the boiler and only provide an Open Close signal. When the contacts close, the boiler starts; when the contacts open, the boiler stops. Confirm your boiler supports dry contact control before purchase.
• More functions Temperature calibration, ventilation function, reset function, frost protection, child lock, memory function that all settings will be saved when power off, hysteresis setting, etc. Power supply AC 90-240V 50 60Hz, Output Max 3A. This WiFi boiler thermostat requires a 220V mains power supply.
• Open window detection The open window detection function makes it easy to save energy. The boiler thermostat wifi will automatically close down the heating to prevent energy wastage when the room is ventilated by detecting a rapid drops in room temperature (such as when a door or window is left open).