Brightness, temperature switch, ABB i-bus KNX, physical sensors, weather control center/station, 3-way brightness, temperature switch For recording and sending the brightness and temperature. Threshold switch for controlling switching, dimming and blind actuators depending on the ambient brightness and/or temperature. With blocking object for deactivating one or more threshold switches. The bus connection is made via a bus connection terminal. Connections: KNX line: Bus connection terminal Inputs: 2 Brightness limit: 1 lux - 100,000 lux Protection class (device): IP 54 Temperature range (device): -25 °C to 55 °C Dimensions (H x W x D): 110 mm x 72 mm x 54 mm