The proper installation and operation of an intrusion alarm system are the keys to its effectiveness. ... Building vibrations induced by wind, vehicles moving outside the building, or heavy machinery are troublesome to most sensors. ln fact, anbsp;...
|Title||:||Selection and application guide to commercial intrusion alarm systems|
|Author||:||Alvin H. Sher, Gerard N. Stenbakken, Law Enforcement Standards Laboratory, National Institute of Law Enforcement and Criminal Justice|