Which standard must smoke alarms and detectors comply with to operate in normal environmental conditions?

Which standard must smoke alarms and detectors comply with to operate in normal environmental conditions?

• A. UL 864
• B. NFPA 70
• C. NFPA 101
• D. ANSI/UL 268

Answer: (D)

Detectors used in fire alarm systems are evaluated to a standard that specifically addresses their performance in normal building environments. ANSI/UL 268 defines the requirements for smoke detectors and their ability to operate reliably under typical environmental conditions such as ordinary temperatures, humidity, and air flow. This makes it the standard that ensures detectors will function as intended in everyday use. UL 864 covers fire alarm system control panels and related devices, not the detectors themselves. NFPA 70 is the National Electrical Code, governing wiring and electrical installations, while NFPA 101 is the Life Safety Code; neither sets the detector performance criteria.

Detectors used in fire alarm systems are evaluated to a standard that specifically addresses their performance in normal building environments. ANSI/UL 268 defines the requirements for smoke detectors and their ability to operate reliably under typical environmental conditions such as ordinary temperatures, humidity, and air flow. This makes it the standard that ensures detectors will function as intended in everyday use.

UL 864 covers fire alarm system control panels and related devices, not the detectors themselves. NFPA 70 is the National Electrical Code, governing wiring and electrical installations, while NFPA 101 is the Life Safety Code; neither sets the detector performance criteria.