Reports the difference between the actual temperature and the temperature demand with OpenTherm, enabling the boiler to use only the amount of gas required to meet the heat demand. Features scheduling and boost functions, allowing the heating to be set for certain times of the day, as well as turned on and off with the click of a button. Works with - Amazon Alexa - Apple HomeKit - Google Home - iOS App - Android App 5-25°C Temperature Range Suitable for Combi Boilers Battery-Powered Thermostat 2-Wire Receiver Touchscreen Display 1 Year Guarantee Smart Hub Required Works with - Amazon Alexa - Apple HomeKit - Google Home - iOS App - Android App 5-25°C Temperature Range Suitable for Combi Boilers Battery-Powered Thermostat 2-Wire Receiver Touchscreen Display 1 Year Guarantee Smart Hub Required