burglar alarm


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burglar alarm

[′bər·glər ə¦lärm]
(engineering)
An alarm in which interruption of electric current to a relay, caused, for example, by the breaking of a metallic tape placed at an entrance to a building, deenergizes the relay and causes the relay contacts to operate the alarm indicator. Also known as intrusion alarm.
References in periodicals archive ?
When these items are being protected, a grade AA, BB, or CC burglar alarm system may be required.
Neighborhoods in which burglar alarms were densely installed have fewer incidents of residential burglaries than the neighborhoods with fewer burglar alarms," the study noted.
Selling burglar alarms was also potentially lucrative and having finished university (1984) I was in desperate need for funds.
In addressing the state's argument that the defendant consented to the search when he installed a burglar alarm, the court noted that a person who has an alarm understands that neighbors might call the police if an alarm sounds and that police might enter the house under appropriate circumstances.
Burglar alarms group MK Response asked reformed criminal Richard Taylor - now a Methodist minister in Solihull and presenter of BBC's Cracking Crime - what tips could he pass on to householders.
After a burglary when police took an hour to arrive, Radio 2 DJ Sir Terry added a burglar alarm linked to police to the two already in his pounds 2m home at Taplow, Bucks.
POLICE are warning residents over signing up for "free" burglar alarms.
A Black Country security company is to launch a new service designed to ease the nuisance for businesses of burglar alarms going off outside working hours.
The register enables householders to leave details of key-holders who can be contacted if a burglar alarm malfunctions or goes off accidentally.
One Waterloo resident, from St John's Road, said: "I heard a burglar alarm going off, looked out the window and there were lights flashing everywhere.
He said the advice proved that not all security measures had to be as costly as a burglar alarm.
The purpose of a burglar alarm has traditionally been two-fold," she said.