... CE/ROHS alarm GSM Security Simple Wireless Alarm System,home security protection(LS-GSM-003) I. Security ... Alarm System Features:1) No need the fixed telephone ... System Standard packing:1 Main panel,1 GSM antenna,1 wireless PIR detector,------It use 9V battery,could ... controllers,------It use 12V battery,could last about 1 year.1 Built-in backup battery,1 AC/DC Adapter ...