... groups of relay outputs products introductionThis Excellent GSM + Camera alarm system bases on the GSM network, integrates the communication technology, can ... compensation, hint function for camera fault.Support GSM/CDMA, remotely control the alarm host to arm/ disarm/listen-in/ ... controllers, 1 camera, 1 GSM antenna and 1 RF antenna ,1 power supply, 1 manual GSM alarm system with MMS&SMS function