50m indoors.
(7).Distance:100-150m (free lane),
(6)Power: supplied by adapter .
(5)Decoder: built-in decoder.
(4)Power: 120mA, dynamic:230mA.
(3)CameraOV7725, 300k pixels.
(2).Video Compress:H-264 arithmatic
(1).Wireless Frequency: 2.4GHz.
Parameters
1)2.4GHz digital frequency.
2)Good quality.
3)Night version
4)Connect to varity kinds of locks