Features:
1) Functions: visitor call, dual communication, unlock, monitor, internal call
2) Infrared LEDs on door station
3) One camera with up to 3 monitors (4 wire systems)
4) Power: DC 13.5±0.5V, AC 110 - 240V

Specifications:
Camera:
1) Power source: DC 12V (supplied by interphone)
2) Camera: 1/3" CCD / CMOS
3) Lens: F3.6, 78° adjustable
4) Illumination: 0.1 lux
5) Light source: 6 infrared

LEDs:
1) Power consumption: 2.5W
2) Operating temperature: -10 ~ +50°C
3) Installation: wall mounted
4) Dimensions (L x W x H): 142 x 118 x 25mm
5) Weight: 0.2kg

Monitor:
1) CRT: 4" flat tube
2) Power source: DC 13.5±0.5V, AC 110 - 240V
3) Power consumption: 10W
4) Resolution: 420 TV lines
5) Chime: ding dong chime
6) Operating temperature: -10 ~ +50°C
7) Installation: wall-mounted
8) Dimensions (L x W x H): 219 x 192 x 78mm
9) Weight: 1.2kg

Inner packing:
Dimensions (L x W x H): 36 x 9 x 29cm
G.W.: 2.8kg

Outer packing:
5pcs/ctn
Carton dimensions (L x W x H): 47 x 37 x 31cm
G.W.: 15kg