... even the power is off14) Built-in NI-HI rechargeable battery,it will automaticly to begin to work when the power ... panel,1 GSM antenna,1 wireless PIR detector,------It use 9V battery,could last about 1 year.1 mini siren,1 Wireless ... door detector,------It use 12V battery,could last about 1 year.2 Remote controllers,------It use ...