LED Exit Signs

How to Choose Exit Signs for Commercial Buildings and Egress Routes

Exit signs identify exits and guide occupants along the required path of egress. Selecting them is primarily a life-safety and code-compliance decision, not simply a choice between sign designs. Commercial offices, hotels, schools, warehouses, and healthcare facilities may have different requirements for illumination, emergency power, visibility, and local approvals. Start with the approved egress plan and the jurisdiction's requirements. Then compare sign construction, letter color, viewing direction, mounting method, and electrical configuration before selecting individual models.

Quick Exit Sign Selection Guide

• Standard commercial corridor: Consider an LED exit sign with the required letter color and approved emergency-power arrangement.
• Finished lobby or architectural ceiling: Compare edge-lit or recessed signs with compatible mounting options.
• Location with approved ambient-light charging conditions: Evaluate a listed photoluminescent exit sign.
• Exit that also needs emergency path illumination: Review a compatible exit and emergency light combination unit.
• New York or Chicago project: Check the applicable city-specific requirements and the exact sign configuration.
• Wet or corrosive location: Select equipment with environmental protection appropriate to the actual exposure.

LED Exit Signs vs. Photoluminescent Exit Signs

Internally illuminated LED exit signs use an electrical light source to keep the EXIT legend visible. Depending on the model, emergency operation may be supplied by an integral battery or an approved external emergency-power system.

For example, Lumera lists the MW Lighting MJ-30 red LED exit sign, which uses a 120/277V input and includes battery-backed emergency operation.

Photoluminescent exit signs work differently. They absorb energy from suitable ambient lighting and remain visible through photoluminescence when the surrounding lighting is lost. They do not require an internal electrical light source or battery.

Lumera lists Utopia Lighting FLPL photoluminescent models among its exit sign options. These are distinct from electrically illuminated signs.

However, photoluminescent signs are not suitable for every location. Their performance depends on the type, intensity, and duration of charging light specified in the product's listing and installation instructions. A normally dark corridor may not provide the required charging conditions.

Selection rule: Compare the permitted power or charging method before choosing between LED and photoluminescent signs. Confirm that the exact product and installation meet the local life-safety requirements.

Standard, Edge-Lit, Recessed, and Exit/Emergency Combo Signs

Exit sign construction affects appearance, mounting requirements, and the additional equipment needed for installation.

Standard LED exit signs commonly use enclosed panel-style housings. They are practical for many commercial corridors, utility spaces, and back-of-house installations.

Edge-lit exit signs illuminate a transparent or mirrored panel containing the exit legend. These designs are often chosen for reception areas, lobbies, and other finished interiors.

Recessed exit signs integrate into a compatible ceiling or wall opening. Their installation must accommodate the housing, electrical connections, and required structural support.

Exit and emergency combination units incorporate an exit legend and emergency lighting heads in one assembly. They can be useful where both functions are required near the same location.

For example, a finished hotel corridor may favor a recessed edge-lit sign, while a service corridor may use a standard panel-style LED unit.

A combination fixture does not automatically provide enough emergency illumination for an entire corridor. Its emergency lamp output and distribution must meet the applicable egress-lighting design.

Red vs. Green Exit Signs: Local Code and Approval Requirements

Red and green exit sign lettering are both used in the United States, but the appropriate choice depends on the jurisdiction, occupancy, and adopted requirements.

For general workplaces, OSHA requires exit signs to be distinctive and clearly visible. Building and fire codes may impose additional requirements for color, visibility, and sign construction.

New York City has specific exit sign rules, including red lettering for the relevant sign types. Chicago also has detailed requirements covering illumination, lettering, and directional sign design.

Lumera lists the Utopia Lighting NYELXTEU edge-lit exit sign for New York applications and the Utopia Lighting CAXTEU exit sign for Chicago configurations.

These model families include ordering options. A product title describing a city-approved model does not establish that every available configuration satisfies the project's requirements.

Selection rule: Verify letter color and any jurisdiction-specific approval against the actual ordered configuration before purchasing signs for multiple locations.

Single-Face vs. Double-Face Exit Signs and Directional Arrows

The required sign face depends on where occupants approach it from. A single-face sign may be suitable above a door when the sign is viewed from one direction. A double-face sign can serve a corridor intersection where people approach from opposite directions.

For example, an exit sign mounted perpendicular to a hallway may need visible legends on both sides. A sign mounted flat against the wall above an exit door may only need one visible face.

Directional arrows, sometimes called chevrons, indicate the required direction of travel when the exit path is not immediately apparent. Their direction must match the approved egress route.

Some signs use field-configurable arrow inserts or knockouts, while others require the direction to be specified when ordering. Verify the exact design rather than assuming every sign supports every arrow configuration.

The listed viewing distance matters as well. A sign that is clearly visible across a short lobby may not be appropriate for a long corridor with obstructions or turns.

Selection rule: Match face count, arrow direction, and viewing distance to each sign location on the egress plan.

Exit Signs With Battery Backup: UL 924 and 90-Minute Emergency Operation

Most commercial egress applications require exit signs to remain illuminated when normal electrical power fails. Under commonly adopted building-code provisions, the required emergency duration is at least 90 minutes, subject to the specific occupancy and applicable exceptions.

There are different ways to meet this requirement. A sign may include an integral rechargeable battery, receive power from an approved emergency supply, or use another permitted illumination method.

An AC-only exit sign does not include the same emergency capability as a battery-backed model. It may still be suitable for an installation with an appropriately designed external emergency-power system.

For example, Utopia Lighting's CAXTEU family offers AC-only and emergency battery configurations. The battery option must be explicitly included in the ordered part number when required.

UL 924 is a principal North American safety standard for exit signs and emergency lighting equipment. Confirm the exact model's applicable listing rather than assuming every product in a general exit-sign category carries the same certification.

Selection rule: Specify the complete emergency-power arrangement and required runtime before choosing the sign's final part number.

Wall-Mounted vs. Ceiling-Mounted Exit Signs

Exit signs can use wall, ceiling, or end-mounted arrangements depending on their construction. The correct mounting position must provide clear visibility along the required egress route.

Ceiling-mounted signs can serve corridors or open spaces where an overhead location improves visibility. End-mounted signs project from a wall and may be easier to see when approaching from either direction.

Wall-mounted signs may be appropriate directly above exit doors or in other approved locations. Recessed signs require additional coordination with the ceiling or wall assembly.

For hardwired installations, check the manufacturer's approved mounting canopy, wiring entry, and electrical-box requirements. Compatible electrical device and outlet boxes may be needed for the branch-circuit connection.

Confirm the actual supply voltage. Several Lumera exit sign models use 120/277V configurations, but that range should not be assumed for every product.

Mounting and circuit connections must follow the manufacturer instructions and the locally adopted electrical and fire-safety requirements.

Wet-Location Exit Signs and NEMA 4X Protection

Ordinary indoor exit signs should not be assumed suitable for locations exposed to rain, washdown, condensation, or corrosive conditions.

For example, a covered exterior exit may have different exposure requirements from a fully open loading dock. A commercial washdown area may require additional protection against water and corrosion.

Lumera lists the Westgate XTN4X-2RW NEMA 4X exit sign as an option for applications requiring its specified enclosure protection.

The environmental rating must apply to the complete installed assembly. Mounting hardware, wiring entries, seals, and any associated weatherproof electrical boxes must be suitable for the location.

NEMA 4X protection does not automatically establish approval for hazardous locations containing flammable gases or combustible dusts.

Self-Testing Exit Signs vs. Manual Battery Testing

Battery-backed emergency signs require ongoing inspection and testing to verify that their emergency operation remains functional.

Many conventional models provide a manual test switch and a charging-status indicator. Selected exit signs offer self-test or self-diagnostic functions that automatically check designated components and report faults.

For example, Utopia's NYELXTEU product family offers a self-diagnostic option. Confirm the ordering code if automatic testing is required.

Where the adopted NFPA 101 provisions apply, emergency lighting systems commonly require monthly functional tests and annual full-duration tests, with records maintained under the applicable procedure. Approved self-testing systems may have different permitted testing methods.

Automatic diagnostics do not eliminate every inspection or maintenance responsibility. Signs must still remain visible, undamaged, correctly positioned, and suitable for the installed environment.

Selection rule: For buildings with many signs, consider self-diagnostic capability when supported by the exact model and the facility's testing procedure.

Exit Signs vs. Emergency Lights: Complete the Egress Lighting Plan

An exit sign identifies the exit or direction of travel. An emergency light illuminates the path occupants must use when normal lighting fails. These are related but distinct life-safety functions.

A battery-backed exit sign may keep its lettering illuminated without producing enough light for people to navigate the surrounding corridor. A combination unit adds emergency lamp heads, but its light distribution still needs to be evaluated.

For example, Lumera lists the Utopia Lighting AEL architectural emergency light as a separate emergency-lighting product.

Where a project also includes ordinary ceiling fixtures, the LED troffer collection covers general commercial lighting. Standard troffers do not automatically provide emergency operation without an approved backup configuration.

Selection rule: Verify exit identification and emergency path illumination separately, even when both functions are provided by one fixture.

Ordering Exit Signs for Commercial and Multi-Site Projects

For new construction, renovations, and multi-building replacements, prepare an exit-sign schedule from the approved egress drawings rather than ordering identical signs for every location.

Include the following details:

• Sign location and required viewing distance
• Red or green lettering and any local approval requirement
• Single-face or double-face construction
• Required directional arrows
• Standard, edge-lit, recessed, photoluminescent, or combination type
• Mounting arrangement and electrical supply
• Battery backup, external emergency power, or approved non-powered operation
• Indoor, damp, wet, or corrosion-related environmental requirements
• Manufacturer part number, configuration options, and quantity

For recurring commercial purchasing, eligible customers can review Lumera Electric's trade account options.

Request a Quote for Exit Signs and Emergency Lighting

Planning an office renovation, hotel installation, warehouse upgrade, or multi-site exit-sign replacement? Request a project quote from Lumera Electric with the approved sign schedule and required quantities.

Include the exact model configurations, letter colors, face directions, emergency-power requirements, and jurisdiction-specific specifications. Final code compliance and installation should be verified by the project's qualified design and installation professionals and the authority having jurisdiction.

Exit Signs FAQs

Do exit signs have to be red or green?

The correct lettering color depends on the applicable building, fire, and occupational-safety requirements. Red and green signs are used in different US jurisdictions, but some local codes specify a particular color. For example, New York City requires red lettering for the applicable exit-sign types. Confirm the project's requirements before ordering or standardizing a color across multiple buildings.

Do all LED exit signs need battery backup?

No. Many LED exit signs include rechargeable batteries, but others are AC-only versions intended for use with an approved external emergency-power arrangement. The requirement is to provide the necessary emergency illumination under the applicable code, not necessarily to place a battery inside every sign. Check the complete model configuration and emergency-power design.

How long must an exit sign stay illuminated during a power outage?

Commonly adopted US building codes require at least 90 minutes of emergency exit-sign illumination, subject to occupancy-specific provisions and permitted alternatives. A battery-backed sign should be verified against that requirement, while AC-only signs need a suitable external emergency-power arrangement. The exact sign and installation must comply with the locally adopted code.

Can photoluminescent exit signs replace battery-backed LED signs?

They can be an approved alternative in certain installations, but not automatically. Photoluminescent signs depend on suitable ambient light for charging and must satisfy their listed installation and performance requirements. A location that remains dark for long periods may be unsuitable. Confirm the applicable jurisdictional requirements and product listing before using a non-powered sign.

What is the difference between single-face and double-face exit signs?

A single-face sign displays its legend from one side, while a double-face sign can be viewed from opposite directions. Double-face signs are useful in suitable corridor intersections or end-mounted arrangements. Choose the face count according to the approved egress plan and actual sightlines, not simply the number of doors in the area.

Does an exit and emergency combination light replace separate emergency lights?

Sometimes, but only where its emergency illumination covers the required area. A combination unit provides exit identification and emergency lighting heads in one assembly. Its emergency light output and distribution must still meet the project's egress-lighting requirements. Additional emergency lights may be necessary farther along the exit route.

How often should exit signs be inspected and tested?

Exit signs should remain visible and functional at all times. Battery-backed emergency equipment generally requires periodic functional and duration testing under the applicable life-safety code. Where adopted NFPA 101 requirements apply, monthly and annual testing procedures are commonly used. Self-testing equipment may provide an approved alternative procedure, but inspections, records, and maintenance remain necessary.