In the design system M. The device is a room temperature controller and a binary input. Depending on the operating mode, the current temperature setpoint and the room temperature, a manipulated variable for heating or cooling control is sent to the KNX. The temperature can be recorded either by the internal or by an external temperature sensor that is connected to the terminal block of the button interface. The button interface internally generates a signal voltage for connecting a maximum of four conventional buttons/potential-free contacts. Two of these inputs can be used to connect low-current LEDs. With integrated bus coupler. The bus is connected via a bus connection terminal. Software functions KNX functions Room temperature controller Controller type 2-point control, continuous PI control, switching PI control (PWM). Output Continuous in the range 0xx100% or switching ON/OFF. Controller mode -Heating with one controller output. Cooling with one controller output. Heating and cooling with separate controller outputs. Heating and cooling with one controller output. 2-stage heating with 2 controller outputs. 2-stage cooling with 2 controller outputs. Operating modes comfort, comfort extension, standby, night reduction, frost/heat protection. Operation setpoint adjustment with adjustment wheel in the range can be parameterized, presence button function can be parameterized/deactivated. Valve protection, lock control. Functions button interface switching, dimming, blinds, value transmitter (dim value transmitter, extension for light scenes with/without memory function, temperature value transmitter, brightness value transmitter). Button interface up to 4 inputs, 2 of which can be used as outputs and one for connecting the remote sensor. Output voltage 5 V (SELV). Output current max. 0.8 mA. Max. cable length inputs/outputs max. 5m, remote sensor max. 50 m. Accessories remote sensor for KNX room temperature controller UP/PI 616790. Material brilliant thermoplastic, antibacterial. Smooth and self-disinfecting surface with antibacterial effect. Color similar to RAL 9016. Color active white glossy.