What happens to the alarm during a power cut?
Alarm systems are fitted with batteries which can keep the system running for up to 24 hours during a mains failure. During a power cut the keypad will beep and the mains light will flash to indicate a problem. If the system is monitored a signal will be sent to monitoring which will notify them of a mains failure. If the alarm is set it will remain set, if it is unset it will remain unset. If the battery is flat or faulty the system will down-power. A PIN code may be required on mains restore. Fortunately the programming and codes will still be kept in the memory.
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