Characteristics:

Video Phone Spec.
Power consumption -

-Standby: 3W

-Operation: 12WDC 

Power  -  MAX 24V/ 0.5A
Display - 4“ Color  LCD/3.5” 
Wiring  - 4wires
Communication method - Speaker-Phone type
Operating Temperature  - -10C ~ +45C
Dimensions - 203(W) × 153(H) × 43(D)mm
Weight - 0.62 kg 

Door Phone Spec.
Lens - 1/3”,92 F=2.2
Angle of view - 92
DC Power output - DC 12V ± 10%
Power consumption - 90mW(MAX)
Video Output - 1.1V p-p ± 10%/ 75Ω  LOAD
Operation humidity - -10C ~ +40C
Resolution - 330 TV LINES
Dimension - 85(W) × 120(H) × 12(D)

Color Video Door Phone SHT-340/335

            Main Function & Characteristics:
 -  4" (3.5”)color TFT LCD hands-free monitor(surface mount type)
 - 1/3" color CCD door camera (flush mount type,270k pixels)
 - verify visitors & door release
 - magnetic S/W, emergency S/W connectable(optional)
 - power: AC/DC adaptor ( input: AC 220v, output: DC 12v/0.9a)
 - wiring: 4wires between monitor and camera(3.5”)