1. visitor calling, video intercome, unlock, monitor
2. manual deterrent alarm, infrared night vision, automatic timer switch
3. audio and video output, can be connected to the....

1. displays language: support multi-language
2. memory: 6 text message, 2 graphic information, and can show the logo of company
3. operation: switch buttons, 4 adjustable....

1. power supply: DC 12v/ 1A
2. screen: 7" color LED
3. effective resolution: 640* 380
4. external dimension:
monitor: 190* 235* 35mm
camera: 125* 95* 35mm
or: 175* 70* 50mm....

1. power suuply: DC 12v/ 1A
2. screen: 4" B/ W or 3.5" color LED
3. effective resolution: 640* 380
4. external dimension:
monitor: 215* 185* 42mm
camera: 125* 95* 35 mm
OR....