2.4ghz digital transmission can effective avoid analog wireless transmission signal interference,different channels ,different channel’s image ,high resis interference capability the camera built-in LED and photoresistance . can according to the light’s strong and weak to automatic turn on or turn off the LED . *Two-way talkback function * the transmit distance is 100 meters without block cleary and stable image . *the emitter-receiver must need input the pair Pass word for use ,privacy is very hign . *LED indicate the working statu *one receiver can match 4 cameras .
* receiver can show the battery quatity of electricit *can show indoor temperature