Certifications
UL 924 Certified Lighting
Certified Emergency Lighting for Life-Safety Compliance
What UL 924 Certification Means
UL 924, the Standard for Emergency Lighting and Power Equipment, applies to equipment intended to automatically supply illumination or power to critical areas when normal power fails — including emergency luminaires, exit signs, battery packs, inverters, and automatic transfer and charging equipment. Certification confirms the equipment meets the performance requirements referenced in the National Electrical Code (NFPA 70) Article 700/701, the Life Safety Code (NFPA 101), and applicable building and fire codes, including a dedicated Emergency Lighting Control Functionality test.
UL 924 applies to equipment for unclassified locations. Emergency Lighting installed within a classified hazardous location needs to meet additional or alternative requirements outside the scope of UL 924 — typically the same hazardous-location classification as the surrounding fixtures, layered on top of emergency performance requirements.
UL 924 vs. UL 1598
These standards address different aspects of a fixture:
- UL 1598 addresses general luminaire safety — electrical, fire, and mechanical hazards.
- UL 924 addresses emergency-specific functionality — automatic activation, minimum illumination duration, and battery/power performance during an outage.
A single emergency luminaire is often certified to both: UL 1598 for base fixture safety, and UL 924 for its emergency battery backup and control functionality.
Where UL 924 Applies
- Egress paths, stairwells, and exit routes — code-required illumination for safe evacuation
- Industrial and commercial facilities in unclassified areas — standard emergency lighting and exit sign requirements
- Facilities requiring documented 90-minute egress illumination — a common life-safety code baseline
Confirming the Right Certification
For emergency lighting installed within a classified hazardous location, confirm both UL 924 compliance for emergency functionality and the appropriate hazardous-location classification for the installation area — UL 924 alone doesn't qualify a fixture for a classified space.