Underwriters Laboratories Inc.

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Fire and Life Safety

Services

Safety and performance testing and certification to the applicable standards including:

Fire alarms

UL 217

Single and Multiple Station Smoke Alarms

UL 268

Smoke Detectors for Fire Alarm Signaling Systems

UL 2034

Single and Multiple Station Carbon Monoxide Alarms

UL 985

Household Fire Warning System Units

UL 864

Control Units for Fire Protective Signaling Systems

UL 521

Heat Detectors for Fire Protective Signaling Systems

UL 539

Single and Multiple Station Heat Detectors

Gas alarms

UL 1484

Residential Gas Detectors

UL 2034

Single and Multiple Station Carbon Monoxide Alarms

UL 2075

Gas and Vapor Detectors and Sensors

Fire alarm controls

UL 864

Control Units and Accessories for Fire Alarm Systems

UL 985

Household Fire Warning System Units

Alarm signals

UL 1638

Visual Signaling Appliances - Private-Mode Emergency and General Utility Signaling

UL 1971

Signaling Devices for the Hearing Impaired

UL 464

Audible Signal Appliances

Hospital signaling

UL 1069

Hospital Signaling and Nurse Call Equipment

Adjunct Services

Beyond product testing and certification, UL has a diverse portfolio of services for the signaling industry including: