Re: Commercial Alarm - help

["Bill" <bill190nospam@xxxxxxxxx>]

My experience with false alarms caused by equipment problems is in the
following order...

1. Motion detectors - This can now be almost eliminated with the dual
technology motion detectors. This costs more money though.

2. Front door contacts on businesses with aluminum and glass fronts. After
closing, a customer will barge full speed at the front door to open it, but
it is locked, and the customer causes the front door contact to momentarily
open (due to the whole aluminum front "vibrating"). If there is a control
panel which will trigger an alarm with a momentary open, you will get a
false alarm. Use a control panel which requires the contact to be open for a
full second or install a relay with a small capacitor between the door
contact and the electronic control unit.

3. Building wiring acting as an antenna. If you have a large building with
wires run all over, the wires can act as an antenna. Electrical disturbances
nearby (especially lightning) can induce voltage in all this wiring and
trigger a false alarm. Use shielded wiring. This of course is more
expensive.