Many modern security systems use wireless technology for signaling between security devices. Installing battery powered wireless window/door sensors, motion detectors and keypads makes for a speedy and non-invasive installation. Section 4.7 has special requirements for wireless security systems. Section 4.7.3 provides details on proper function of the alarm systems in wireless security systems. See requirements 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.

4.7 Special Requirements for Low-Power Radio (Wireless) Systems.

4.7.3 Alarm Signals

4.7.3.1 When actuated, each low-power radio transmitter shall automatically transmit an alarm signal.

4.7.3.2 Each low-power radio transmitter shall automatically repeat alarm transmission at intervals not exceeding 60 seconds until the initiating device is returned to its nonalarm condition.

4.7.3.3 Fire alarm signals shall have priority over all other signals.

4.7.3.4 The maximum allowable response delay from activation of an initiating device to receipt and display by the receiver/control unit shall be 10 seconds.

4.7.3.5 An alarm signal from a low-power radio transmitter shall identify the particular initiating device in alarm at its receiver/fire alarm control unit until manually reset.