Red flashing Obstruction light for night time marking of structures that present a hazard to aviation. Red flashing / steady/Infra-Red in night mode. Incorporates the benefits of advanced LED, Infra-Red optical and system control technologies to meet the most demanding applications.

Orga Aviation – Datasheet Drawing – L550 – 20kd – rP02-01
Orga Aviation – Datasheet Drawing – L550 – 20kd – rP02-02
Orga Aviation – Datasheet Drawing – L550 – 20kd – rP02-03

Key features

  • Five year warranty
  • Housing based on 30 years of experience offshore product design experience
  • Lightweight and easy to install
  • Extremely low wind factor
  • Integrated design with built-in photocell and monitoring – no additional power supply enclosures required
  • No maintenance required over service life
  • Orga optical design produces highly accurate and uniform narrow light beam
  • Integrated GPS based flash synchronisation between lights. UTC 0.0.0
  • Extremely low power consumption
  • 15 year field proven power supply technology
  • Long life power supply to match LED life, does not use electrolytic capacitors
  • Optional heaters for use in cold environments
  • Made in the Netherlands


  • Certified to ICAO Annex 14 Volume 1, Ninth Edition, July 2022, Chapter 6, Medium Intensity Type B / C obstacle light
  • Certified to 2020 AVV (German “General Administrative Regulation for the marking and lighting of obstacles to air navigation”) “Feuer W ES, rot”
  • Various national approvals available upon request

Performance characteristics

  • Horizontal beam pattern: 360°
  • Flashing: see table
  • Effective intensity: see table
  • Vertical beam pattern: 3° minimum
  • Infra-Red wavelength ~850 nm
  • Infra-Red beam follows visible light, or beam is according to local standards

Electrical characteristics

  • Operating voltage: 120-240 Vac nominal 50-60 Hz
  • Power factor: >0.8
  • Power consumption: see table
  • Overvoltage protection: Class III according to IEC61643-1

Physical characteristics

  • Dimensions: L x W x H:  see drawing
  • Weight: 12 kg
  • Design degree of protection: IP65
  • Operating temperature range:
    -40 ºC/+55 ºC
  • Shipping information:
    550 x 550 x 400 mm; approx. 16 kg
  • Supplied with pre-mounted Orga cable for easy installation and high reliability
  • Cable bending radius static: 7x cable diameter
  • Outer cable diameter: Ø12.5 +/- 0.5 mm
  • Cable weight: 260 g/m
  • Level indicators for correct mounting

System design, control and monitoring

  • Use as a stand-alone light, or in a multiple light system with an Orga CIP controller
  • Optional Orga CIP controller facilities provides control interfaces for:
    • “smart switch” aircraft detection input
    • Visibility condition variable intensity input
    • Remote photocell control input/override
    • Visibility condition variable intensity input; intensity steps 30% and 10%