With the Tado Smart Radiator Knob X Starter Pack, you can control the temperature per room. Even if you don't have a boiler. You control the radiator knob via the app on your smartphone. There, you can also find extra functions to save energy. For example, set temperature schedules so the heating is only on when you're at home. Or let the thermostat do it automatically via geofencing. Thanks to the open window detection, the heating is turned off automatically when the window is open. You save energy this way. For these extra functions, you do need an Auto Assist subscription of € 3.99 per month. The radiator thermostat of the Tado X series works with the Matter smart home platform. This allows you to connect it to other smart devices.