Pressure mats and stress sensors are examples of security devices intended to send a signal when triggered. These devices must comply with applicable standards, such as ANSI/UL 634, Standard for Connectors and Switches for Use with Burglar-Alarm Systems, or ANSI/UL 639, Standard for Safety for Intrusion-Detection Units.

• According to UL 634, Section 1.1, “These requirements cover connectors and switches for use with burglar-alarm systems in mercantile premises, mercantile safes and vaults, bank safes and vaults, government and corporate locations, and residences. They are intended to be used in circuits of limited energy, for these applications, in accordance with Article 725 of the National Electrical Code, NFPA 70”.

• According to UL 639, Section 1.1, “These requirements cover intrusion-detection units intended to be used in burglary-protection signaling systems. These units are intended to be used in indoor or outdoor locations to automatically indicate the presence of an intruder by actuating electrical control circuits.”

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.

5.3.4 Pressure-Sensitive Devices.

5.3.4.1 Pressure-sensitive devices shall be in compliance with applicable standards, such as ANSI/UL 634, Standard for Connectors and Switches for Use with Burglar-Alarm Systems, or ANSI/UL 639, Standard for Safety for Intrusion-Detection Units.

5.3.4.2 Pressure-sensitive devices shall include but not be limited to the following:

(1) Floor mats

(2) Stress sensors