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Photocell Emergency Lights – Smart, Automatic Emergency Illumination

Photocell emergency lights offer a reliable, energy-efficient solution for outdoor safety lighting by combining UL 924-listed emergency lighting with built-in dusk-to-dawn photocell sensors. These fixtures function as standard LED outdoor lights during normal operation, automatically turning on at night and off at daylight. In the event of a power outage, they instantly switch to emergency mode using an internal battery backup—ensuring code-compliant illumination when it’s needed most.

  • UL 924 Compliant
  • Dusk-to-Dawn Operation
  • 90-Min Battery Backup
  • Wet Location Rated
  • Photocell Sensor

Designed for demanding outdoor environments, photocell emergency lights are constructed with wet-location rated housings—typically made from corrosion-resistant die-cast aluminum or UV-stabilized thermoplastic. Each unit includes a sealed Ni-Cd battery that provides a minimum of 90 minutes of emergency runtime in accordance with NFPA 101 and UL 924 requirements. The integrated photocell maximizes energy efficiency by reducing unnecessary power consumption and extending the lifespan of the fixture.

These versatile fixtures are ideal for parking lots, walkways, building exteriors, stairwell exits, loading docks, and other wet or semi-exposed areas that require dual-purpose functionality. Advanced models feature self-testing diagnostics, push-to-test switches, and dual-voltage input (120/277 VAC) for compatibility with most commercial systems. Some units offer adjustable LED outputs of up to 1,000 lumens to meet specific lighting needs while maintaining compliance.

⚠️ What is a Photocell Emergency Light?
A photocell emergency light is an outdoor-rated unit with a built-in light sensor. It activates at dusk, deactivates at dawn, and provides emergency lighting during outages—ideal for entryways, egress routes, and exterior safety zones.

With their sleek, architectural profiles and smart light-sensing technology, photocell emergency lights deliver continuous safety coverage, reduced maintenance, and streamlined installation. Whether you're updating exterior egress lighting or outfitting a new facility, these fixtures provide an all-in-one solution for smart emergency illumination.

Browse our full collection of commercial emergency lights or explore wet-location emergency lighting for additional outdoor-rated, dual-mode options that enhance safety and efficiency.

FAQs About Photocell Emergency Lights

What is a photocell emergency light?

A photocell emergency light includes a dusk-to-dawn light sensor that enables automatic operation during normal hours and activates battery-powered emergency lighting during outages.

Where are photocell emergency lights typically used?

They are ideal for parking lots, building perimeters, walkways, and dock areas—anywhere you need all-in-one dusk-to-dawn lighting with emergency backup.

Are these lights code compliant?

Yes. All models are UL 924 listed and meet emergency lighting requirements outlined in NFPA 101 and OSHA.

How long will the battery last during a power outage?

Each unit includes an internal battery backup that delivers at least 90 minutes of emergency runtime.

Do photocell emergency lights require special installation?

No—most models support universal mounting and come pre-wired for standard 120/277V connections.

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✅ What to Look For in Photocell Emergency Lights

  • UL 924 / NFPA 101 Certification: Ensures compliant emergency operation and 90-minute backup.
  • Integrated Photocell Sensor: Provides automatic dusk-to-dawn activation and energy efficiency.
  • LED Output (~600–1,000 lm): Bright path lighting during emergencies and normal operation.
  • Wet-Location Rated Housing: Die-cast aluminum or thermoplastic with IP65/NEMA 4X sealing.
  • Battery Backup: Ni-Cd pack offering 90-minute runtime with full recharge in under 24 hours.
  • Self-Test or Push-to-Test: Built-in monthly/semi-annual diagnostics for streamlined code compliance.
  • Dual Voltage (120/277 VAC): Compatible with common commercial power systems.
  • Mounting Flexibility: Surface or wall mount with clear line-of-sight for photocell sensor.

FAQs About Photocell Emergency Lights

What is a photocell emergency light?

It’s an emergency lighting fixture with an integrated light sensor that automatically turns the unit on at dusk and off at dawn—plus 90-minute backup power in case of a power loss.

How does the photocell work?

Photocell sensors detect ambient light levels: below threshold they switch the light on; above threshold they turn it off, saving energy and extending unit lifespan.

Are these UL 924-compliant?

Yes—all models are UL 924 and NFPA 101 compliant, combining emergency lighting certification with intelligent control features.

Is the housing weatherproof?

Absolutely—units are built with IP65 or NEMA 4X-rated housings (die-cast aluminum or thermoplastic), ideal for wet or outdoor locations.

What backup power is included?

Most models use sealed nickel-cadmium batteries that provide at least 90 minutes of backup lights and recharge within 24 hours.

Do they have self-testing features?

Many units include self-test diagnostics or manual test buttons to meet monthly and annual inspection requirements.

Where are they used?

Commonly installed in building exteriors, parking garages, walkways, loading docks, stairwell exits, and other dim or outdoor locations.