OL370i Medium Intensity Wind Turbine Obstruction Light

The OL370i is a medium-intensity LED obstruction light ideal for permanent wind turbine lighting. Compliant not only with ICAO Type B and FAA L-864 requirements, two lights can be used together on one nacelle to meet FAA AC 70.7460-1L regulations for wind turbines with a rotor tip height between 500 and 700 feet. This low-maintenance aircraft warning light is user-friendly and easy-to-install, and also includes GPS synchronization ensuring proper flashing characteristics for any location.


  • Complies with ICAO Medium-Intensity Obstruction Light Type B requirements
  • Photometrically compliant with FAA Obstruction Light Type L-864 as per FAA Advisory Circular AC 150/5345-43H and AC 70/7460-1K and 1L marker regulations
  • Fully integrated system for simple installation and operation
  • Various mounting options allow flexible light placement
  • Robust, low-maintenance design
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Models and Options

Infrared Lighting
The OL370i uses 850 nm infrared (IR) LEDs, making it NVG and NVSIS compatible.
Overvoltage Protection
An additional overvoltage device mounted inside the nacelle offers protection for lightning protection zone 1 (LPZ 1).
Adjustable Mounting
The OL370i's adjustable mounting pedestal allows it to be mounted in various positions.

OL370i: Get A Quote

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When you decide to use our obstruction lights, our team is here to help. We offer free site assessments to determine the products you need for your project and location. You’ll get a free Energy Balance Report™ and lighting layout. Get more details and sign up now—it’s free!

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Light Specifications and Documents

  • Input Voltage: 120-240 VAC
  • Frequency: 50-60 Hz
  • FH Dimensions:
    • 15.75″ dia. x 7.31″ (8.69″ top of GPS)
    • 400.0 mm dia. x 180.57 mm (220.72 mm top of GPS)
Click Here To See All Specs
Input Voltage
120-240 VAC
50-60 Hz
FH Dimensions
15.75″ dia. x 7.31″ (8.69″ top of GPS)
400.0 mm dia. x 180.57 mm (220.72 mm top of GPS)
FH Weight
26.3 lbs (11.93 kg)
FH Aerodynamic Wind Area99.125 in2 (63,900.51 mm2)
Protection RatingIP65, NEMA 4X


Night (Red) Power Consumption
20 fpm30 fpm40 fpm
OL370i FAA

Light Compliance and Certifications

Our solar- and AC/DC-powered obstruction lighting systems are designed to meet your relevant federal aviation regulations. Our thorough product testing and Intertek certifications ensure your light will meet your requirements over the long term. Want proof? See our certificates below. If you have any questions about specific lighting requirements relating to your project, please contact us.