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1) Two way communication，video transmission，door release

2) One button support one unit room

3) Compatibility of video and audio indoor phone

4) Name input

5) Capacity: 3 units      

6) Explosion-proof

Specification(outdoor station)

1) Temperature: -40~70

2) Relative humidity: 45%~95%

3) Atmospheric pressure:86 Kpa~108 Kpa

4) Protection level:IP33

5) Working Voltage:  DC12~DC15V  

6) IR CCD Camera;

7) Explosion-proof

8) Super slim shell

9) Static current: 0.07mA

10) Working current: 166mA

11) Dimension: 178*88*34mm

12) N.W:440g

13) Installation: surface mounted

14) Warranty: 1 year