Vanguard FTS 371 Red Obstruction Light

Medium Intensity LED Aviation Obstruction Lighting System

Vanguard FTS 371 Red Obstruction Light

The FTS 371 is a low-power FAA L-810/L-864 red obstruction lighting system for FAA type A0/A1 structures. It meets changing FAA regulations for flashing markers.

With LED replacing incandescent lighting and marker power consumption decreasing by as much as 98%, a new approach for accurate monitoring is required. The system uses a patent-pending current feedback monitoring technology that will not fluctuate with changes in incoming power and temperature, providing consistent and predictable results.


  • Flash rate of 20, 30, 40 or 60 flashes per minute (200 ms flash duration)
  • Infrared beacon LEDs for night vision compatibility
  • Mode override switch
  • Photodiode control with alarm inhibit option
  • 1 dry contact relay (master alarm)
  • Support for up to 4 markers and 1 beacon
  • 5-year warranty

FTS 371

  • AO – double L-810 (OL2) and controller
  • A1 – beacon, controller and markers
  • Standalone – FH 371 standalone beacon (AC or DC)

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