The Homematic IP wall thermostat with switching output is part of the Homematic IP smart home system and controls 230V underfloor heating actuators via a relay output. The wall thermostat allows for the easy upgrade of a conventional underfloor heating control to an intelligent room temperature regulation by replacing the existing bimetallic controller. This enhances living comfort and actively contributes to energy savings. The smart solution offers up to three individually adjustable heating profiles and an additional three freely adjustable cooling profiles, each with six heating phases and 13 switching points per day. The desired temperature can be conveniently selected in 0.5°C increments using the adjustment dial on the Homematic IP wall thermostat. The large illuminated display shows the set and actual temperature as well as the humidity. Additionally, all values can also be read and adjusted via the Homematic IP app. The wall thermostat is mounted in standard flush-mounted boxes, making it significantly easier to replace existing wall thermostats. The dimensions of the Homematic IP wall thermostat even allow for integration into multi-frame systems from leading manufacturers. If the thermostat is to be used without the Homematic IP access point or the Homematic central unit, the desired settings can be selected directly on the thermostat without smart home connectivity.