A few alarms have battery backups, so ya wanna stay away from those. But all you have to do is cut the power and the phone line. The alarm won't be able to contact the security center with no phone line, and won't run with no power.
Alarms generally send a warning to the security centre if the power is cut. If there's ever a power cut in my parents house they ring my dad's mobile to see if there's a problem.
alarms and such
Linear Mode
