Electronic flush-mounted room temperature controller for controlling or monitoring temperatures in living rooms, offices and hotels. Suitable for all common switch ranges. Glossy cream white, 50x50 cover with button. Suitable for water-based heating systems. Completely silent thanks to the use of a triac switch, in contrast to relays or bimetal. Can be switched for actuators that are normally open or normally closed, so can be used for heating or cooling. Adjustable range restriction in the setting button as a heating cost brake. A captive screw with threaded insert for fastening the housing cover and practical plug-in terminals make installation easier. Installation in a 55 mm flush-mounted box.