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

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
6) Power consumption: 2.5W
7) Operating temperature: -10 ~ +50°C
8) Installation: wall mounted
9) Dimensions (L x W x H): 142 x 118 x 25mm
10) Weight: 0.2kg

Monitor:
1) LCD: 4" TFT
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): 217 x 199 x 55mm
9) Weight: 1.0kg

Inner packing:
Dimensions (L x W x H): 36 x 9 x 29cm
G.W.: 2.7kg

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