IIRC people like ADT do a decent monitored one with two designated key holders.
Alarm goes off - they ring you to check if it's a false alarm. If you don't answer, or give the wrong password, then they ring the police and the keyholder to check it out.
They also do the same for fire brigade if the smoke detector goes off.
Alarm goes off - they ring you to check if it's a false alarm. If you don't answer, or give the wrong password, then they ring the police and the keyholder to check it out.
They also do the same for fire brigade if the smoke detector goes off.
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