B.IQ Push-button 2gang comfort Operating temperature -5 - +45 °C For bus coupling unit flush-mounted order no. Best.-Nr. 7504 00 01 Labelling field see accessories order no. Best.-Nr. 7590 00 80 with anti-dismantling protection with blue operation LED and 4 white status LED (labelling field illumination) for switch, push-button, dimmer and shutter functions value transmitter for dimming, position, brightness and temperature values 1 and 2 byte extension unit for light scene push-button cyclic transmission also possible via extension unit alarm telegram after disconnection from bus coupling unit 1 bit or 1 byte single and two push-button operation parameterisable one push-button operation for switching, pushing, shutters and dimming activation of second user level via object