Alert and Perimeter zones help to filter false alarms in Comfort
If a zone is defined as an Alert Zone, then when armed, violation of the zone will not cause an alarm until a different Alert zone is also violated within 10 minutes
Perimeter zones behave in a similar way, except that a Perimeter zone followed by an immediate or Alert zone will activate the alarm, but not if only Perimeter zones are activated. Perimeter zones can be used on the outside of a protected area, and Alert zones on the inside.
Alert and Perimeter zones are usually Motion detectors, and this scheme works best when there are sufficient motion detectors installed in a property
As a security measure, when the telephone line is cut when while an alert zone is active, there will be an immediate alarm
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