Probably has not got a Sab when first installed?
Remove mains power and disonnect battery does bell then ring, if not system disabled. If rings reconnect battery to stop sound,then get your ladders out.
Probably has not got a Sab when first installed?
Remove mains power and disonnect battery does bell then ring, if not system disabled. If rings reconnect battery to stop sound,then get your ladders out.
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