I have two rooms in the heating thermostat with wall thermostats and window contacts in use. The installation and the Teach was no problem. The plant was ready for operation after a short time and runs since then (around three months) properly. I had previously already electric heating controller for years in use. Compared with the predecessors of this thermostat is nice and quiet and can easily attach (The included adapter set have not needed). The Teach to the radiator is fully automatic like most and worked on immediately. I still like the nice big screen with which zuschaltenden lighting. I let me show there the desired temperature, while the room temperature is displayed on the wall thermostat. So I always have everything in sight.