Flash Products

FTB 311L Dual LED & Xenon

L-864 / L-865 Medium Intensity Obstruction Lighting System with Eagle

Designed to meet FAA L-864/L-865 obstruction lighting requirements, Flash Technology’s FTB 311L includes a white xenon strobe for day, a red LED light flashing for night and 3 LED markers. It’s suitable for structures 200’ to 500’ AGL (FAA tower type E1-E2).


An Eagle interface allows onsite programming, diagnostics and alarm notification via laptop.


FTB 311L Features

  • Automatic failsafe to day mode and notification if the system has not changed states in 19 hours
  • Data available for compliance with QLI waiver
  • TechEagle™ diagnostics and programming
  • Separate flashheads for ease of maintenance
  • ARM™ – Advanced Relay Monitoring – 7 dry contact data points
  • NEMA 4X stainless steel outdoor rated enclosure
  • RS485 bus for plug and play install to Flash FTW series monitoring systems
  • 12 LED indicators to convey operating status
  • 2-year warranty on all xenon parts including strobe tube
  • 5-year warranty on LED flashhead and markers
  • FTB 311 base unit can be configured to interface with existing red system

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

Input Voltage and Frequency

120 or 240 VAC, 60 Hz
110 or 230 VAC, 50 Hz
208-240 VAC, 50 Hz

Marker Power Consumption

2.1 watts per marker

Marker Dimensions

9 x 2.75 x 2.13” (228.6 x 69.9 x 54.1 mm)

Marker Weight

1.6 lbs. (0.7 kg)

Beacon Power Consumption

White day – 130 watts
Red night – 20 watts
White night backup – 75 watts

Beacon Dimensions

15.75 dia. x 7.31″ (400 dia. x 185.67 mm)

Beacon Aerodynamic Wind Area

99.125 in sq (2517.775 mm sq)

Controller Dimensions

14 x 16.7 x 8.4” (355.6 x 425.5 x 214.4 mm)

Controller Weight

51 lbs. (23 kg)

Protection Rating

IP65, NEMA 4x


FTB 311 datasheet
FTB 311L Sistema de iluminación de obstrucción de intensidad media con Eagle

Current Manual

FTB 311-6 Manual Rev 4 (2.3MB)
Manuals for older product revisions can be found in the Knowledge Base.