Unisec system sounds when power is off due to blackout

Donna requested 2 quotes from Security Alarm Installers in Seven Hills

Burglar alarm sounds when power is turned off due to blackout. system (unisec) is in off mode, alarm stops when power restored after blackout.

ALARM IT

Provisual

Reset home alarm system - bosch
need to reset home alarm and 4 remote control keys.

Repair alarm system or new system
I have a NESS 5000 security system that is not working. I would like to...

I have an old GE Simon alarm in a property that I wish to get connected.
I have only just purchased the house and therefore do not have any pin codes...