Homematic IP wall thermostat with a humidity sensor - smart heating control for an optimal indoor climate This wall thermostat is used to control all the radiator and floor heating actuators in the room together, without any cables. A possible formation of mould can also be prevented by displaying the humidity level. The wall thermostat can be linked to radiator and floor heating thermostats without any additional devices, and it can control these by operating the setting wheel manually in 0.5 °C steps. A smart integration via a CCU3 or Access Point central control unit is also possible and makes it possible to control the temperature on the basis of the time of day in different profiles. For example, when the device is connected to additional opening sensors, the energy consumption can be reduced due to a reduction of the heating power during ventilation. Features / compatibility - Homematic IP integrates the areas of indoor climate, security, fire and water protection, weather, light