... patent, (patent number: ZL2003 2 0107152.9).Adopt three bands, GSM 900/1800/1900MHz, alarm remotely without the limit of distance ... function ,IR light compensation, hint function for camera fault.Support GSM/CDMA, remotely control the alarm host to arm/ disarm/listen ... door sensor,1 siren, 2 remote controllers, 1 camera, 1 GSM antenna and 1 RF antenna ,1 power supply, 1 manual ...