Holdup, duress, and ambush system installation must be done in a way to avoid unintentional operation by employees, janitors, cleaners, and others that may have access to the equipment.

In addition, initiating devices must be mounted in a manner that prevents unintentional operation by jarring, vibration, falling objects, and similar causes.

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.

8.1.2 Installation.

8.1.2.1 Systems that utilize wiring or low-powered radio frequency to connect initiating, annunciating, and remote-control devices shall comply with Chapter 4.

8.1.2.2 The means of interconnecting wiring connections between initiating signaling devices and control units shall be supervised so that the occurrence of a single open in the installation wiring and its restoration to normal operation shall be indicated within 200 seconds.

8.1.2.3 Initiating devices shall be located in such a manner to prevent unintentional operation by employees, janitors, cleaners, and others with access to the equipment.

8.1.2.4 Initiating devices shall be mounted in such a manner to prevent unintentional operation by jarring, vibration, falling objects, and similar causes.

8.1.2.5 Portable initiating devices shall require positive, intentional action to initiate an alarm signal, in accordance with ANSI/SIA CP-01, Control Panel Standard — Features for False Alarm Reduction, Section 4.4.2.