Gira KNX operating devices/ Pushbutton sensor 3 Basis System 55 HOME GIRA BUILDING TECHNOLOGY SWITCH RANGES DOOR COMMUNICATION GIRA CATALOUGE Pushbutton sensor 3 Basis System 55 KNX pushbutton sensor 3 Basis, 1-gang System 55, Gira E22 KNX pushbutton sensor 3 Basis, 2-gang (1+1) System 55, Gira E22 KNX pushbutton sensor 3 Basis, 3-gang System 55, Gira E22