Wireless systems on commercial burglary and fire alarm systems may be used if...

• A. If weatherproof
• B. If listed for the purpose for which it is intended
• C. If battery powered
• D. If installed by licensed technicians

Answer: (B)

Wireless components can be used in commercial burglary and fire alarm systems only if they are listed for the purpose for which they are intended. Listing means a recognized testing laboratory has evaluated and approved the device for that specific application, ensuring it will function reliably with the panel, meet signaling requirements, and comply with safety and code standards. This approval guarantees the equipment is suitable for the system and won’t introduce compatibility or reliability issues.

Weatherproofing alone doesn’t confirm suitability for alarm signaling, battery power describes the power source rather than approved use, and while professional installation is important, the gating requirement here is that the device must be listed for the intended purpose.