Question about tado° Radiator thermostat

You need the starter kit which includes a small box that connects to the router and one thermostatic head per radiator.

The subscription is not obligatory, it costs 3.00 per month and allows an automation of the regulation of the radiators (absence, open window...)

If you don't take the subscription you will get a notification on your smartphone that will suggest you to lower the temperature in your absence.