Display:3.5-inch TFT LCD MonitorResolution:420 TV LinesExtension:3 monitors(or up) capability with one camera(optional)4 wire polarity or 2 wire polarity, (option)Warning intrusion alarm,, Door openin

Video doorphone in B/W or color are available.2 wire type or 4 wire type.

B/W VIDEO DOORPHONE WITH BUILT-IN IMAGE RECORDER, PDP-115-01-Display: B/W 4 CRT Monitor for PDP-110-Bi-directional speaking system-Door lock release.- Ding-Dong Tone- With contract, brightness, volumn

Display:4-inch flat type B/W CRT MonitorResolution:400 TV LinesDoor opening function(door opener is optional)Audio/Video output.Prevent teardown warning.With infrared night vision.

- Display:4 flat type B/W CRT Monitor- Bi-directional speaking system- Dong-Dong Tone- Door lock control.- Alarm intrusion warning.- A/V output.- 2 way speaking.- Extension:3 monitors with one camera-

B/W Video doorphone in vandal-proof outdoor station. Option with Image recorder.Monitoring, speaking, door lock releasing, warning intrusion alarm, outdoor teardown warning intrusion alarm, A/V output

Detailed Product Description-Display: B/W 4 CRT Monitor for PDP-110- Auto turn-off time: 60 sec.-Bi-directional speaking system-Door lock release.- Ding-Dong Tone- With contract, brightness, volumn co

Video doorphone system with extra surviellance cameras, pdp-113-01-display:4 b/w CRT monitor. Or 3.5 TFT color monitor.-bi-directional speaking system-door lock release.- with contract, brightness, vo

VIDEO DOORPHONE SYSTEM WITH 4 ZONE WIRELESS ALARM SYSTEM FUNCTION, PDP-112-02-Display:4 b/w CRT Monitor.-Bi-directional speaking system-Door lock release.- Ding-Dong Tone.- With contract, brightness,