Gira KNX operating devices/ Flush-mounted bus coupler button HOME GIRA BUILDING TECHNOLOGY SWITCH RANGES DOOR COMMUNICATION GIRA CATALOUGE Flush-mounted bus coupler button Insert for KNX bus coupler button, 1-gang with single-point operation and status LED Insert for KNX bus coupler button, 1-gang with 2-point operation and status LED Insert for KNX bus coupler button, 2-gang with single-point operation Insert for KNX bus coupler button, 2-gang with 2-point operation