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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.

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    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


    Current Manual

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