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Flash Products

Vanguard® Medium FTS 370r Red LED

L-864 Tower Light or L-885 Catenary Light

The Vanguard Medium FTS 370r is a red L-864 medium intensity LED obstruction lighting system for structures 150’ to 1050’ AGL (FAA tower types A1-A3). The system also meets FAA L-885 low intensity catenary requirements. It complies with CAR 621 2nd edition for medium intensity CL-864 flashing lights and ICAO 6th edition standards for medium intensity type B obstacle lights.


The FTS 370r uses a single cable for communications as well as beacon and marker power. Firmware can be upgraded for future compatibility with no need for controller modification. The single enclosure houses a low-voltage environment, removing the need for an interlock switch and allowing alarms to remain active when the door is open.


FTS 370r Vanguard Medium Features

  • Infrared lighting – NVG and NVIS compatibility using 850nm infrared (IR) LEDs on the flashhead per FAA AC 150/5345-43J
  • Interleaved LEDs and by-pass circuitry provide longer life by allowing the loss of individual LEDs up to the 25% limit
  • Surge immunity of 25kA to withstand 99% of all lighting strikes
  • Patented Fresnel optics to minimize ground scatter
  • Ruggedized photodiode in metal housing with shielded cable
  • Input power breaker switch eliminates replaceable fuses
  • Aircraft Detection Lighting Systems (ADLS) interface
  • Automatic failsafe switches to day mode after 19 hours of no mode change; can be disabled if necessary
  • 4-line OLED backlit display for visibility in any lighting conditions
  • Dry contact monitoring (day, night, marker, PED, GPS, comm alarms and mode status)
  • Compliant with AC 70/7460-1L
  • 5-year warranty


FTS 370r Vanguard Medium Options

  • SMART Card – monitor and control the system remotely and receive full diagnostic information through LTE modem or ethernet-based connectivity. SNMP, Modbus or Eagle Protocols may be used.
  • LTE modem for improved communication stability
  • Outdoor Wi-Fi antenna for onsite diagnostics and lighting inspections
  • GPS synchronization
  • Upgrade firmware remotely
  • TECK90 Support – provides protection from RF interference and damage on high-power broadcast towers up to 700′ AGL

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

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    Input Voltage

    100-240 VAC
    ± 48 VDC (optional)


    50-60 Hz

    Marker Power Consumption

    2.1 watt per marker*
    3.4 watts per marker with IR

    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)

    FH Dimensions

    15.75″ dia. x 7.31″ height

    FH Weight

    26.3 lbs (11.92 kg)

    FH Aerodynamic Wind Area

    99.125 in2

    Controller Dimensions

    23″ x 17.13″ x 6.44″

    Controller Weight

    44 lbs. (20 kg)

    Protection Rating

    IP65, NEMA 4x

    * Not included in system consumption


    L-864 Red Night**

    40 watts (40 watts with IR)
    20/30/40 fpm
    2,000 ± 25% ECD

    L-885 Red Night

    50 watts (50 watts with IR)
    60 fpm
    2,000 ± 25% ECD

    ** Only 30 fpm flash rate is applicable for FAA certified applications filed under AC 70/7460-1L, and requires the use of L-810(F) depending on the height of the structure