Wireless thermostat with display and flush-mounted radio receiver for controlling electric floor heating mats or other consumers with a fixed connection. The receiver is controlled by a radio signal based on the deviation of the room or floor temperature from the target temperature, which then switches the consumer on or off via the switching contact. The power supply for the radio receiver must be provided on site in the flush-mounted box. Thanks to the wireless signal transmission, the room thermostat can be placed anywhere in the room, wall-mounted or using the included stand.