Metal front panel with built-in high-resolution color camera 105 degree viewing angle, for flush/recessed mounting, plastic protection visor, one button to select subscriber, LED illumination for night vision, IP54 degree of protection, compatible with all DT two-wire systems, power supply 24 Vdc, pinhole camera lens (Sharp CCD 420 TV lines), with built-in keypad for access control, memory for 50 codes, talk time 90 sec, dimensions: 220(H)x120(W)x50(L) )