Proper installation of interior detection devices is critical in a security system. These devices must be installed in accordance with the manufacturer’s installation instructions in order to work as intended.

Proper placement of motion sensors, glass break detectors, door and window sensors and the like, ensures a fully protected interior environment.

In many cases, UL 681, Standard for Installation and Classification of Burglar and Holdup Alarm Systems, is used to provide guidance on various levels of protection needs in accordance with the vulnerability assessment.

Below is a sample of NFPA 731. For the complete section, see the actual NFPA 731 text at NFPA.ORG. Once there, click on the free access link to the latest edition of NFPA 731.

5.3 Interior Detection Systems.

5.3.1 Interior detection devices shall be installed in accordance with the manufacturer’s published instructions.

5.3.2 When activated, interior protection devices shall annunciate at the protected property and/or transmit an alarm signal.

5.3.3 When activated, alarm signals from interior detection systems shall be verified in accordance with 9.6.1.1 prior to a request for service made to an AHJ.