Together with TP-Link, Hama is one of the cheapest solutions tested. The controls are solidly made, but the attached control dial is neither attractive nor easy to use. The technology inside also has its weaknesses: it measures inaccurately and the GPS-based control is rightly "beta" - it often failed during the test.

On the road and forgot to turn off the heating? With digital radiator thermostats, that's no longer a problem. The room temperature can be turned up or down from anywhere via a smartphone app. The apps also enable automatic heating according to schedule. At home, heating only takes place when it should be warm - without you having to worry about it. This way you can also save energy and costs.

The Hama thermostat does what it is supposed to do, the operation via the rotary control is convincing. The temperature accuracy is good and there is no reason to criticise the app setup.