Airfield Lighting Systems Introduces STM Solar Runway Guard Light for Reliable Off-Grid Runway Safety
June 19, 2026 – Airfield Lighting Systems (ALS), a leading innovator in airfield ground lighting solutions for commercial and military airports, today announced the launch of its new STM Solar Runway Guard Light (STM.804). This high-performance elevated LED solution provides clear visual warnings at runway holding positions, enhancing safety for aircraft and ground operations.
The STM.804 features two side-by-side unidirectional LED modules that deliver alternating flashes (yellow or red) at 45–50 per minute. Available in yellow (STM.804.RGL.01(Y)) for standard ICAO/FAA compliance and red (STM.804.RGL.02(R)) for traffic/holding position applications, it ensures highly visible stop-bar signalling in all conditions.
Key Features and Benefits
- High-Efficiency LEDs: Up to 60,000-hour service life with direct colour emission for superior reliability and visibility.
- Solar-Powered Option: Fully autonomous operation with integrated high-efficiency solar panel and battery system — ideal for off-grid, remote, or temporary installations. Pairs with astronomical time relays (e.g., ASTRO series) for automatic sunrise/sunset scheduling.
- Robust Construction: Corrosion-resistant aluminium body with IP65 protection and wide operating temperature range (-55°C to +55°C).
- Precise Adjustment: Vertical (0° to +20° in 1° steps) and horizontal (±20° in 5° steps) aiming with secure locking.
- Easy Maintenance: Modular design allows LED module or lens replacement without optical realignment; easily replaceable LED driver unit.
- Power Flexibility: Compatible with both 6.6A series circuits and 110/230V parallel circuits. Optional monitoring and photocell available.
- Compliance: Meets ICAO Annex 14 Volume I, FAA L-804 (AC150/5345-46), IEC TS/EN 61827, and NATO STANAG 3316 standards.
“The STM Solar Runway Guard Light delivers exceptional performance without reliance on grid power,” said a spokesperson for Airfield Lighting Systems. “Its solar-powered capability, combined with long-life LEDs and rugged design, makes it a cost-effective and sustainable solution for airports seeking reliable runway safety enhancements, especially in remote locations.”
With a lightweight modular build (net weight 23.5 kg) and durable construction, the STM.804 minimises maintenance while maintaining full photometric performance required for critical airfield applications.
