When that happens you will need to reset the sensors using the keypad on the control unit.
Dsc alarm memory light on.
The corresponding sensor number will flash.
Normally there is a wiring diagram with the proper model number on it.
Alarm memory when an alarm occurs the memory indicator and fire indicator if applicable will turn on.
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.
This is a short video on how to view and clear alarm memory with a dsc power series alarm system.
Press the key to return to ready.
You seem unclear as to your system model.
Alarm memory display if the memory light is on an alarm has occurred during the last time armed period.
Dsc alarms can go off for a number of reasons.
The alarm memory light will remain on until the alarm is armed and disarmed once.
To clear the memory arm and disarm the system.
To reset the alarm or the warning lights enter your master code twice press the reset button and then enter 72 if the alarm is still ringing.
Once the alarm is off try to find out why.
Dsc commands vary a bit from model to model.
Press the then 3 keys to display the zone which caused the alarm.
Press to exit.