My son has recently moved house and the property is protected by an ‘SL Compact’ burglar alarm system. I’m not sure how old it is but it appears to function properly when the alarm exit code is set, and it de-arms itself normally when the entry code is keyed in.
However, when the mains supply to the alarm is switched off the alarm panel itself goes completely dead,…no led’s lit and no sound from the panel whatsoever;...unfortunately the bell-box/sounder immediately activates at full volume.
The only way to stop the bell-box/sounder is to restore the mains power and key-in the 4-digit code.
Very inconvenient because he needs some electrical work in other parts of the house but as soon as the mains power is switched off the bleedin’ alarm goes off!...neighbours not pleased!
Am I right in thinking that the alarm panel should have a back-up battery to prevent this happening?...is the battery knackered?...or is something else amiss?
All advice gratefully received.
However, when the mains supply to the alarm is switched off the alarm panel itself goes completely dead,…no led’s lit and no sound from the panel whatsoever;...unfortunately the bell-box/sounder immediately activates at full volume.
The only way to stop the bell-box/sounder is to restore the mains power and key-in the 4-digit code.
Very inconvenient because he needs some electrical work in other parts of the house but as soon as the mains power is switched off the bleedin’ alarm goes off!...neighbours not pleased!
Am I right in thinking that the alarm panel should have a back-up battery to prevent this happening?...is the battery knackered?...or is something else amiss?
All advice gratefully received.