... 2) Color: White, audio door phone. 3) audio intercom For Multi apartment, condominium & ... &intercom w/ guard center 1) Remote door releasing 2) Color: White, audio door phone. 3) audio intercom Technology Parameter:Working ... Dimension: 215x80x45(mm)Installation: Surface wall mount typeaudio door phone,audio door phone kit, audio phone for multi-apartment, condominium, highrise buildings, villa etc ...