Obstruction Light (CL-810)

Low Intensity Obstruction Light – CARs 621 CL-810 compliant steady-burning red light with NVG compatibility for marking towers, chimneys, and buildings, available in single (OBSL) or double (OBDL) configurations.

EMA OBSL/OBDL Low Intensity Obstruction Light

Compliant with

Canadian Aviation Regulations Standard 621 CL-810

FAA AC 150/5345-43 L-810

ICAO Annex 14 Type A&B

Steady-Burning Protection for Fixed Obstructions

The EMA OBSL and OBDL obstruction lights provide low-intensity red obstruction marking for chimneys, towers, high-rise buildings, and other fixed hazards to air traffic.

CL810 compliance ensures the light includes infrared output for night vision goggle (NVG) compatibility, supporting military and SAR helicopter operations.

Available in single-lamp (OBSL) or double-lamp (OBDL) configurations. The double unit includes an automatic transfer relay that instantly switches to the backup lamp if the primary fails, ensuring continuous operation.

Optional photoelectric control enables automatic dusk-to-dawn operation.

CL810-compliant visible and IR component for NVG operations.

OBSL net weight 6.9 kg.
OBDL net weight 17.8 kg.

Operating temperature range -40°C to +50°C.

Wind resistance up to 160 km/h.

Easy-mount construction with stainless steel clamps. Aluminum cast or sheet metal body. Control options include a photoelectric unit for automatic operation, a manual switch, or a remote control.

Red prismatic dome resistant to heat shocks. Silicone rubber gasket between dome and body for watertightness. Porcelain lampholder with incandescent lamp. Transfer relay included in OBDL for automatic lamp failover.

Corrosion-resistant aluminum body with chromate treatment and electrostatic powder coating in aviation yellow. Stainless steel hardware.

Automatic transfer relay in OBDL ensures uninterrupted marking if the primary lamp fails.

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