This video door phone with 7″ LCD screen,
1/4″ CMOS camera has functions of monitoring, calling, speaking and
unlocking, it’s a great gift for you.
2.7″ HD Color LCD Display
4.OSD menu//16 kinds of chord ring/200M distance/brightness,color,volume adjustable
5.Color HD camera/IR night vision
6.Free indoor-outdoor units combination/Max 1V4 TO 2V4