Keystone Edge-Lit LED Exit Sign, Green Letters, Surface Mount, 90-Minute Battery Backup, 120-277V, White (KT-EX-EL1-WH3GL-SU)
Keystone Edge-Lit LED Exit Sign, Green Letters, Surface Mount, 90-Minute Battery Backup, 120-277V, White (KT-EX-EL1-WH3GL-SU)
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About this item
About this item
- Green LED Letters: Energy-efficient green illumination meets code requirements
- Surface Mount Design: Wall or ceiling mount with included hardware
- Edge-Lit LED Technology: Ultra-thin profile, uniform illumination, modern appearance
- 90-Min Battery Backup: Self-testing, UL924 listed, meets NEC/IBC requirements
- 120-277V Universal Voltage: Keystone quality with 5-year warranty and ENERGY STAR qualified
Shipping & Returns
Shipping & Returns
Shipping: Enjoy free standard shipping on most orders over $99. (Exclusions apply for oversized & commercial items). We ship to the contiguous 48 United States.
Returns: We offer a 60-day return window for most items. Products must be in their original, unused condition with all packaging. (Exclusions: Special orders, clearance, and custom items).
We process payments securely and do not store credit card information.
Description
Description
Keystone KT-EX-EL1-WH3GL-SU Edge-Lit LED Exit Sign
The Keystone KT-EX-EL1-WH3GL-SU is a Keystone Technologies edge-lit LED exit sign designed for code-compliant emergency egress marking with green letter illumination. Ensure life safety compliance with this surface-mount exit sign featuring ultra-thin edge-lit LED technology, 90-minute battery backup, and universal 120-277V voltage for flexible installation in commercial buildings, multi-family residential, and institutional facilities requiring UL924-listed exit signage with modern aesthetics.
Keystone KT-EX-EL1 Exit Sign Features
- Green LED Letters: Energy-efficient green illumination meets code requirements for exit signage
- Edge-Lit LED Technology: Ultra-thin profile with uniform illumination and modern appearance
- Surface Mount Design: Wall or ceiling mount installation with included hardware
- 90-Minute Battery Backup: Meets NEC and IBC emergency duration requirements
- Universal Voltage: 120-277V AC operation for flexible installation in commercial applications
- Self-Testing: Automatic monthly and annual self-diagnostics ensure code compliance
- Clear Acrylic Face: Durable, impact-resistant lens with excellent light transmission
- Thermoplastic Housing: White high-impact housing for long-lasting performance
- LED Indicator Lights: Visual status indicators for AC power, charging, and test results
- Energy Efficient: Low power consumption reduces operating costs
- Easy Installation: Includes all mounting hardware and installation instructions
- UL924 Listed: Certified for emergency exit sign applications and code compliance
Keystone KT-EX-EL1-WH3GL-SU Exit Sign Specifications
- Brand: Keystone Technologies
- Series: EL1 Edge-Lit Surface Mount
- Model Number: KT-EX-EL1-WH3GL-SU
- UPC: 843654165066
- Product Type: LED Exit Sign
- Technology: Edge-lit LED
- Letter Color: Green
- Face Type: Clear acrylic
- Face Options: Single or double face
- Housing Material: High-impact thermoplastic
- Housing Color: White
- Battery Type: Maintenance-free sealed lead-acid or NiCd
- Battery Backup Time: 90 minutes minimum
- Recharge Time: 24 hours
- Input Voltage: 120-277V AC, 50/60Hz
- Power Consumption: Less than 5W
- Self-Testing: Yes - automatic monthly (30-second) and annual (90-minute) tests
- Test Switch: Manual test button included
- LED Indicators: AC power (green), charging (amber), test failure (red)
- Mounting Options: Surface mount (wall or ceiling)
- Chevron Arrows: Optional directional arrows available (sold separately)
- Operating Temperature: 32°F to 104°F (0°C to 40°C)
- Dimensions: Ultra-thin edge-lit profile
- Certifications: UL924 Listed, meets NEC and IBC requirements, ENERGY STAR qualified
- Warranty: 5 Years
- Weight: 2.8 lbs
Exit Sign Applications
- Commercial office buildings and corridors
- Retail stores and shopping centers
- Multi-family residential buildings and apartments
- Educational facilities and schools
- Healthcare facilities and medical offices
- Hospitality hotels and guest corridors
- Industrial and warehouse facilities
- Stairwells and exit pathways
- Any application requiring code-compliant exit signage
Installation & Operation
The Keystone KT-EX-EL1-WH3GL-SU exit sign offers surface mount installation flexibility for wall or ceiling applications. The included mounting hardware and installation instructions make setup quick and easy. Connect to your AC power source (120-277V) and the unit will automatically charge the battery and display the green AC power indicator.
During normal operation, the exit sign remains illuminated while the battery charges. When AC power is lost, the battery backup automatically activates, maintaining illumination for 90 minutes. When power is restored, the unit automatically returns to charging mode. The self-testing feature automatically performs monthly 30-second tests and annual 90-minute tests, with LED indicators showing test results for easy code compliance verification.
Surface Mount Design
The EL1 series features surface mount installation for wall or ceiling applications. The included mounting hardware allows for quick installation directly to the mounting surface. The ultra-thin edge-lit profile provides modern aesthetics while the white thermoplastic housing ensures durability for commercial and institutional applications.
Code Compliance & Self-Testing
The Keystone KT-EX-EL1-WH3GL-SU meets all NEC (National Electrical Code) and IBC (International Building Code) requirements for emergency exit signage. The built-in self-testing feature automatically performs required maintenance tests, eliminating the need for manual testing and ensuring continuous code compliance. Monthly 30-second tests verify battery and lamp operation, while annual 90-minute tests confirm full emergency duration capability. LED indicators provide clear visual confirmation of test results, making inspections quick and easy for facility managers and code officials.
Why Choose Keystone Exit Signs
Keystone Technologies is a trusted leader in emergency exit signage with decades of American manufacturing excellence. The EL1 series represents the latest advancement in exit sign technology, combining ultra-thin edge-lit LED design with surface mount installation and self-testing capability. The thermoplastic housing ensures durability, while the self-testing capability provides hassle-free code compliance and reduces maintenance costs.
With UL924 listing, 90-minute battery backup, universal 120-277V voltage, and ENERGY STAR qualification, the Keystone KT-EX-EL1-WH3GL-SU delivers professional-grade exit sign performance. The edge-lit LED technology provides uniform illumination with modern aesthetics, while the surface mount design offers installation flexibility for any application. With Keystone's 5-year warranty and reputation for quality, the EL1 exit sign delivers long-term reliability and value.
Why Buy From Us: As an authorized Keystone dealer, we guarantee 100% genuine products with full manufacturer warranty, expert technical support, and fast shipping.
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Frequently Asked Questions
Should I buy red or green exit signs?
Should I buy red or green exit signs?
There is no single national rule; it depends on your local fire code. While red is the traditional color in most of the United States, many states and cities (like parts of the West Coast) mandate green because it is associated with "go" and safety. You must check with your local fire marshal before purchasing.
What is the difference between AC-only and battery backup exit signs?
What is the difference between AC-only and battery backup exit signs?
A battery backup exit sign (the most common type) has an internal battery that powers the sign for 90 minutes when the building loses electricity. An AC-only exit sign does not have a battery; it is designed for buildings that have a central emergency generator that kicks in during an outage.
What is an "Edge-Lit" exit sign?
What is an "Edge-Lit" exit sign?
An edge-lit exit sign is a premium, architectural fixture where the lettering is etched onto a clear acrylic panel and illuminated from the top or side. They look much sleeker than standard plastic box signs and are popular in hotels, offices, and lobbies.
How high should an exit sign be mounted?
How high should an exit sign be mounted?
According to NFPA 101, exit signs should be mounted so that no point in the exit access corridor is more than 100 feet from the nearest sign. While there is no strict minimum height for the sign itself (other than being visible), it is typically mounted above doors (approx. 80 inches high). Low-level exit signs (mounted near the floor) are sometimes required in addition to high signs for smoke visibility.
How long do LED exit signs last?
How long do LED exit signs last?
LED exit signs are extremely durable. The LED strips inside can last for 10 years or more without needing replacement. However, the backup battery typically lasts 3 to 5 years and will need to be replaced to ensure the sign passes its annual 90-minute test.

