According to the Loudoun County's False Alarms Ordinance, Chapter 655, a false alarm is any alarm, whether audible or silent, to which the responding deputy finds no evidence or situation requiring a response by law enforcement, such as an attempted crime, a crime in progress or a crime that has just occurred.
A false alarm includes a site where one or more doors or windows are found unsecured and there is no evidence of unlawful entry. Alarms that are activated due to a power outage are also considered false. Silent robbery alarm set-off by owners or employees to report an incident other than a robbery is also a false alarm.
Other False Alarm Events
Other examples of false alarm events include:
An overly-sensitive system that activates when persons rattle a door or window
Animals locked inside and moving about the premises
Doors or windows left open or ajar
Drapes or balloons blowing in the breeze
Errors by the alarm monitoring (central station) service
Mail being dropped through a door mail-drop slot
Malfunctioning alarm systems
Owner, visitor, real estate agents, cleaning crews, or other employee error in disarming the alarm system
Power outages coupled with improper battery back-up system