Flash Products

FTS 361-4 LED Tower Lighting System

Medium Intensity Red Obstruction Lighting System

The FTS 361-4 LED series is an L-864 system for structures taller than 150′ AGL (FAA tower types A1-A6) as well as MET towers.


All FTS 361 series systems include a display menu for onsite:

  • Alarm notification
  • Diagnostics
  • Configuration
  • Lighting inspections


FTS 361-4 LED Features

  • 5-year warranty, 10+ year life expectancy
  • Automatic failsafe—switches to night mode after 19 hours of no mode change; can be disabled if necessary
  • Fresnel optics minimize ground scatter
  • No EMI or RF
  • 24/7/365 monitoring and call center services
  • Configurable to meet AC 70/7460-1L


FTS 361-4 LED Options

  • Eagle or Modbus serial connection provides advanced data monitoring
    (When monitored by Flash Technology, the system qualifies for annual lighting inspections rather than quarterly)

Please fill out the form below or call 615.503.2000 with questions or to order this product.

Input Voltage

100-240 VAC


50-60 Hz

Marker Power Consumption

6.8 watts per marker

Marker Dimensions

5.25” x 5.3” (133.4 x 133.6 mm)

Marker Weight

1.8 lbs. (0.82 kg)

FH Dimensions

15.75” dia. x 7.31” (400 dia. x 185.7 mm)

FH Weight

26.3 lbs. (11.92 kg)

FH Aerodynamic Wind Area

99.125 in² (2517.775 mm²)

FH Power Consumption

14 watts (50% duty cycle, 20 FPM)
23 watts IR (50% duty cycle, 20 FPM)

Flash Intensity

Red night – 2,000 ± 25% ECD

Controller Dimensions

21.75 x 16.75 x 6.44” (522.5 x 425.5 x 163.6 mm)

Controller Weight

22 lbs. (9 kg)

Controller Power Consumption

12 watts

Protection Rating



Intertek L864 certificate of conformance (AC 150/5345-43H)
Intertek L864 certificate of conformance (AC 150/5345-43G)
Intertek L864 certificate of conformance (AC 150/5345-43G – infrared)



FTS 361-4 datasheet
FTS 361x-4 Sistema de iluminación de obstrucción de aviación roja de intensidad media


Current Manual

FTS 361X-4 Manual Rev 1 (3.2MB)
Manuals for older product revisions can be found in the Knowledge Base.