Wireless Security Alarm with SMS 1) Home DIY security alarms 2) Voice remind,easy to operate by family 3) 10 defence zone Wireless Security Alarm Product,home security protection(LS ... . Security Alarm System Standard packing:1 Main panel,1 GSM antenna,1 wireless PIR detector,1 mini siren,1 Wireless door detector,2 Remote controllers,1 Built-in backup ...