by TWR Lighting Inc.

White and red flashing obstruction light for reliable day and night time marking of structures that present a hazard to aviation. Incorporates the benefits of advanced LED and control technologies to meet the challenges of the most demanding applications.


  • Five year warranty
  • Simple cable connection for easy installation
  • Low cost of ownership
  • Very low power consumption
  • Stabilized intensity across full operational temperature range
  • Lightweight and easy to install
  • No maintenance required over service life
  • Modular construction controller

Standards / Certification

  • Obstruction light complies with:
  • United States Federal Aviation Administration AC 70/7460-1K; Obstruction Marking and Lighting
  • ICAO Annex 14, volume l; International standards and recommended practices: Aerodrome design and operations, 4th Edition, July 2004, chapter 6.3
  • Various national approvals

Performance Characteristics

  • Effective intensity 20,000 cd white, 2,000 cd red
  • 40 fpm white day, and 20 fpm red night flashing operating mode
  • Horizontal beam coverage = 360°
  • Vertical beam profile: 3° minimum
  • Stabilized intensity control over operation temperature range
  • Form "C" Failure contact controller

Electrical Characteristics

  • Operating voltage: 110-230 VAC nominal; 50-60 Hz
  • Power consumption: (see table)
  • Connection Details: Supplied with a combined power and alarm connection cable
  • LED protection and diagnostic monitoring for optimum reliability
  • Overvoltage protection: Class D

Physical Characteristics

  • Light Dimensions (L x W x H ): 450x415x525mm / 17.7"x16.3"x20.6" nominal
  • Controller Dimensions (L x W x H ): 304x355x152mm / 14"x12"x6" nominal
  • Light Weight: 22kg/48Lbs. Nominal
  • Controller Weight: 6kg/15Lbs. nominal
  • Design degree of protection: IP65
  • Operating temperature range: -55ºC to +55 ºC/-67ºF to +130ºF

System Design, Control and Monitoring

  • Proprietary optical design
  • Individual LED protection and monitoring
  • Automatic shutdown feature if 25% LEDs are not operating
  • Use as a stand alone light or as part of a system
  • Integral junction box
  • Level indicators for correct mounting


Flashes per Minute 40 20 20
Power Consumption (W)
@ 20°C
<140 <15 <15