video door monitor, door phone with good quality and best price

1. The last popular panel design, the outward appearance design is fine, popular fashion
2. The material of out cover is constituted by the anti-high temperature and the wear resistant ABS
3. 4 '' monochrome picture tube /4''colored liquid crystal screen, display by high definition image
4. May call the main engine, speak, observe and open the door
5. High definition image display that reappears the visitor image really
6. External size: 222 x 215 x 55(mm)
7. Weight :1.3kg/ 1.1kg

Hotspot and special specifications:

One door station can support up to four indoor phones.
(2)Audio indoor phones are compatible.
(3)Dual calling, Surveillance, intercom and remote door unlocking are main functions.
(4)Color TFT screen display,  3.5' size are available.
(5)LED in the door station provide a clear picture even in night time.
(6)30 seconds ring tones are available, 30 seconds active surveillance, 120 seconds intercom
(7)Double Ding-Dong ring or chord melody rings are available
(8)Handsfree indoor phone;
(9)Avoid to unlock by error if no calling.
(10)Unique design to unlock the lock which need a quite big current to unlock.
(11)Prevent to unlock by taking apart the outdoor unit because the outdoor unit has no unlock line. This system unlock by indoor unit.
(12) Power Source: DC 12V
(13)Operating temperature: -40C~70C

Product Description

Multifunctional Next door monitor (WT-2904-1)
Frequency:347MHz-353MHz
Shaking mode:Crystal Controlled
Adjustable breadth :N

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