double button video door phone

2 monitors work with 1 camera, the 2 buttons on outdoor camera are conncected to the 2 indoor monitors separately
Interphone between the monitors
Built-in switch power supply(SMPS: 100~240V-50/60Hz);  
B/W or Color are available.

Specifications:

*Indoor Monitor:  
nbsp; 1) Picture reproduction: ≥80% 
nbsp; 2) CRT Resolution: 380TVL(CMOS), 420TVL(CCD) 
nbsp; 3) Brightness Discrimination Rate: >8 
nbsp; 4) Signal system: CCIR/EIA(B/W), NTSC/PAL(Color) 
nbsp; 5) Screen: CRT 4"  
nbsp; 6) Switch power supply AC 100~240V/50~60Hz  
nbsp; 7) Power Consumption: ≤12W (operation),  
nbsp; ≤ 2W (standby) 
nbsp; 8) Wiring: 4 wires 
nbsp; 9) Dimensions: 19*22.8*7cm  

*Outdoor Camera:  
nbsp; 1) Image sensor: 1/4" CMOS or 1/3" CCD 
nbsp; 2) Min. Luminance: 0.1 Lux/F2.0 
nbsp; 3) View Angle: 78°(CMOS), 92°(CCD) 
nbsp; 4) Video output signal range: 1.0Vp-p/75Ω 
nbsp; 5) Voltage/consumption: DC12V-3W 
nbsp; 6) Lock lead wire can directly connect to camera. 
nbsp; 7) Dimensions: 14.2*9.7*3.2cm