Functions:
1) The outdoor unit can call the indoor unit, and the indoor unit
can unlock the outdoor by remote control
2) Each apartment has its own password to unlock the outdoor
3) The outdoor unit can be mated with the online management machine,
and by pressing the "Security" key the unit calls the management
machine
4) The management machine can monitor the image in front of the
outdoor unit
5) The indoor unit can be mated with the online management machine,
and by pressing "Alarm" key, the unit will call the management
machine
6) The management machine can call the indoor unit, to realize the
intercom function
7) The outdoor unit can be mated with several assistant outdoor units

System components:
1) Coding video online outdoor unit
2) Coding indoor unit
3) Power

Specifications:
1) Coding video online outdoor unit:
2) Camera head: 1/3〞 CCD
3) Lens: F=2(hand focus), 92 degree visual angle
4) Resolving power: 420 TV lines
5) Illumination: 0.01LUX
6) Video output: 1VP-P/75ω
7) Display: 4-digit LED
8) Intercom time limit: 75 seconds
9) Password: 1 - 6 digit number
10) Card type: ID card
11) Card capacity: 15 pieces/user
12) Read distance: 3 - 6mm
13) Audio SNR: ≥50dB
14) Audio distortion: <5%
15) Working temperature: -40  70oC
16) Working voltage: DC 12 V  10%
17) Power consumption: static state ≤110mA
18) Dynamic state ≤350mA
19) Size: 360 x 165 x 50mm (aluminum type I), 342 x 140 x 62mm
(aluminum type II), 140 x 252 x 55mm (aluminum type III)
20) Installation method: embedded on a wall or iron door

Indoor unit: JB-2002V
Specifications:
1) Monitor: 4〞 B/W (CRT)
2) Resolving power: 420 TV lines
3) Video output: 1VP-P/75ω
4) Video power: DC18V
5) Distortion: <5%
6) Audio SNR: ≥50dB
7) Working current: ≤60mA
8) Working temperature: -10  55oC
9) Size: 225 x 195 x 75mm (V-2 type), 225 x 185 x 75mm (V-3 type),
230 x 210 x 55mm (V-4 type)
10) Installation method: hanging type