Imaging system components such as control units, subcontrols, and devices that are used to interconnect the cameras to network interface devices (NIDs) or closed circuit television (CCTV) control units are required to be located within secured areas.

NFPA 731 does not define what is considered a “secured area” so it is left up to the security system designer. It is critical for a qualified security system consultant to be able to properly advise potential clients on locating security system imaging components to avoid tampering which can lead to a security breach.

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.

7.1.5 Imaging Systems Security.

7.1.5.1 Control units, subcontrols, and devices that are used to interconnect the cameras to NIDs or CCTV control units shall be located within a secured area.

7.1.5.2 If the enclosures for such equipment are not located within a secured area, the enclosures shall be protected as determined by the security vulnerability assessment (SVA) or by one of the following methods:

(1) Continuously under the notice of assigned security personnel

(2) Located in an area that is accessible only to authorized personnel

(3) Supervised to annunciate tampering