Chapter 3 of NFPA 731 contains general definitions used in the standard. It is important to understand what is considered a “Device”.

There are many different components or devices in a security system. If the word “device” is mentioned in NFPA 731, then it refers to one of the device types below.

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.

3.3.10 Device.

3.3.10.1 Initiating Device. A system component that originates transmission of a change-of-state condition.

3.3.10.1.1 Ambush Alarm Initiating Device. An initiating device or procedure that personnel authorized to disarm the intrusion system at a protected premises can use to transmit a signal indicating a forced disarming of an intrusion detection system.

3.3.10.1.2 Duress Alarm Initiating Device. An initiating device intended to enable a person at protected premises to initiate a signal indicating a need for assistance.

3.3.10.1.3 Holdup Alarm Initiating Device. An initiating device intended to enable an employee of a protected premises to transmit a signal indicating a robbery has transpired.

3.3.10.2 Signaling Device. A device that indicates an alarm, emergency, or abnormal condition by means of audible, visual, or both methods, including sirens, bells, horns, and strobes.