BUS TK interface for connecting a Bticino 2-wire audio or video door intercom system to a telephone system with TFE interface in accordance with FTZ 123D12. For meter cabinet installation (profile rail 35 mm) Features: - Door call on PBX (potential-free or active signal input on the PBX) - Floor call on additional loudspeaker possible - Speaking with a door station - Door opening via the PBX - Can be configured with configurators (NN and P) - Loudspeaker and microphone power can be set separately - The interface is powered via the 2-wire bus 3 DIN module installation housing Dimensions: 53 x 91 x 62 mm