security system video alarm kits

Sipo?Video Door Phone??????????????????????????????????????????????????????????????????
● 4\" B/W CRT and 4\" color???????????????????????????????????????????????????????????????????????????????????????
● Monitoring & talk with a visitor, Door lock release
● Monitoring an entrance
● Supports up to 2 door cameras
● Interphone
● 823 connectable
● Guard station unit
● 2 cameras + 2 monitors + 2 interphones connectable
● Wall surface mounted type?
● Easy installation after mounting a bracket onto the wall
● Power Source: AC100 ~ 220V, 50 / 60 Hz
● System type: Stand-alone
● Mounting type: Wall surface monted type
● Display: 10.16cm (4\'\' ) B/W CRT
● Wiring: Camera; 4 wires Interphone, 4 wires Guard station unit; 2 wires
● Dimension: Excluding handset: 189* 208*53mm
?????????? Including handset: 189*208*56mm
● On-screen duration: Talk, 60sec, Standby; 30 sec
● Distance: 50m( ￠ 0.65), 28m ( ￠ 0.5)?
● Temperature: 0(℃)~ 40 (℃
Accept: O/A