A DSC alarm system should run off of battery power for several hours during a power outage, but if you have a longer period of downtime, the batteries can be drained. When that happens, you will need to reset the sensors using the keypad on the control unit.
Step 1
Open the access door on the unit.
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Step 2
Press and hold the "RESET" key for 2 seconds.
Step 3
Press the buttons "*72" if the alarm does not reset after pressing the RESET button.
Step 4
Check the sensors if it still does not turn off. It means one of the sensors is detecting an alarm condition, such as a glass break or activated smoke detector.
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