Electronic flush-mounted room temperature controller for controlling or monitoring temperatures in living rooms, offices and hotels. Suitable for all common switch ranges. Aluminum, 55x55 cover with button. Suitable for water-based heating systems. Completely silent thanks to the use of a triac switch, unlike relays or bimetal. Automatically switchable via a change-over input, so can be used for heating and cooling. When the clock terminal is connected, the temperature is regulated to a temperature 3.5K lower and increased by 3.5K in cooling mode. With LED status displays. Adjustable range restriction in the setting button to reduce heating costs. 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.