Tritium Exit Signs – Self-Luminous

Tritium exit signs are fully self-luminous fixtures that require no electricity, batteries, or light exposure. These non-electric exit signs provide continuous illumination using tritium gas, a low-level radioactive isotope that emits visible light 24/7 for up to 10, 15, or 20 years.

Ideal for areas without ambient light—such as stairwells, tunnels, mechanical rooms, and outdoor enclosures—tritium exit signs are UL 924 listed and NFPA 101 compliant when installed per code. They are a reliable option for no power exit sign installations where wiring is not feasible.

These self-luminous exit signs require no maintenance or testing during their rated lifespan and include expiration labeling for compliance. For lighted spaces with consistent illumination, you may also consider photoluminescent exit signs as an energy-free alternative.

If you need uninterrupted egress visibility in dark or remote environments, tritium signs offer unmatched convenience, safety, and zero-maintenance operation.

✅ What to Look for in Tritium Exit Signs

Tritium exit signs provide always-on illumination without power or ambient light. Here’s what to evaluate when selecting a self-luminous model:

✅ UL 924 Certified: Confirm the sign is tested and approved for emergency use per national life safety codes.
✅ Self-Luminous Operation: These signs glow using radioactive tritium gas—no electricity, wiring, or recharging required.
✅ Lifespan Rating: Tritium signs are available with 10-, 15-, or 20-year durations. Check the NRC label for expiration and disposal information.
✅ Zero Maintenance: Once installed, no inspections or replacements are required during the rated lifespan—ideal for remote or difficult-to-access areas.
✅ Compliance Labeling: Look for units with proper self-luminous markings, NRC registration numbers, and disposal guidelines.
✅ Mounting Flexibility: Choose single- or double-face signs with universal mounting brackets and directional chevrons.
✅ Photoluminescent Alternative: For well-lit indoor spaces, consider photoluminescent exit signs as a non-radioactive option.

FAQs About Tritium Exit Signs

❓ How do tritium exit signs work?

These signs use tritium gas to emit light continuously without electricity. Tritium emits low-energy beta radiation that excites phosphor coatings inside the sign, producing visible glow.

❓ Are tritium exit signs safe?

Yes. Tritium signs are sealed and regulated by the NRC. They emit low levels of radiation that are safe under normal use and pose no threat when intact.

❓ Do tritium signs expire?

Yes. Depending on the model, they last 10, 15, or 20 years. Each sign includes an expiration date and must be properly disposed of when it reaches end-of-life.

❓ Where are tritium signs typically used?

They’re ideal for areas without lighting or power—such as stairwells, mechanical rooms, remote buildings, and utility tunnels.

❓ What are the disposal requirements?

Tritium signs must be returned to a licensed facility for proper radioactive disposal. Never discard them in regular waste streams.

❓ Are there alternatives to tritium signs?

Yes. In areas with consistent lighting, photoluminescent exit signs offer a non-radioactive, power-free alternative.

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Tritium Exit Signs – Self-Luminous

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Tritium Self-Luminous Exit Sign – 10 or 20 Years, No Power Required