1. GSM wireless alarm system 2. GSM for easy to install and operate 3. GSM Alarm system got CE/FCC/CCC ... . Voice and message alert. Set alarm ON or OFF by remote controller. Call in to set alarm ON, OFF , Monitor ,Output ... wireless PIR detector, 1 wireless door sensor,1 siren, 2 remote controllers, 1 GSM antenna , 1 power supply, 1 manual Packing ...