Flash Products

Vanguard® Medium FTS 370 Solar Powered Lighting

Dual and White Solar Obstruction Lights

Vanguard Medium offers numerous monitoring and control options and is one of the most versatile lighting systems on the market.  Designed for ease of installation, the Vanguard Medium FTS 370d LED tower lighting system is suitable for structures between 200′ and 700′ AGL. The system can be configured to meet requirements for both D and E- type structures:


  • FAA D-type towers – white L-865 or catenary L-885
  • FAA E-type towers – dual (red and white) FAA L-864/L-865 or catenary L-866/L-885


The FTS 370 solar-powered tower package includes everything needed for an FAA-approved solar obstruction lighting system. The system complies with FAA AC 70/7460-1K and 1L and is ETL certified to FAA AC 150/5345-43H. Custom-sized solar power supplies provide power when grid power is unavailable. Systems are sized based on load and geographical location, which dictates solar irradiation. The system will power the lights with at least 7 days of autonomy per FAA Engineering Brief No. 76, meaning the system can function at least 7 days in between charges.

United States solar zones

United States solar zones



FTS 370 Features

  • Interleaved LEDs and by-pass circuitry provide longer life by allowing the loss of individual LEDs up to the 25% limit
  • Industry-leading IEC 61000-4-5 surge immunity to 25kA protects against 99% of lightning strikes
  • LTE modem for greater reliability
  • Ruggedized photodiode in metal housing with shielded cable
  • Input power breaker switch eliminates replaceable fuses
  • Outdoor Wi-Fi antenna for diagnostics and lighting inspections
  • Patented Fresnel optics to minimize ground scatter
  • Aircraft Detection Lighting Systems (ADLS) interface
  • Automatic failsafe switches to day mode after 19 hours of no mode change; can be disabled if necessary
  • Configurable to meet AC 70/7460-1L
  • 4-line OLED backlit display for visibility in any lighting conditions
  • Dry contact monitoring (day, night, marker, PED, GPS, comm alarms and mode status)
  • 5-year warranty


FTS 370 Options

  • Infrared lighting – NVG and NVIS compatibility using 850nm infrared (IR) LEDs
  • 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 can be used.
  • 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.

Input Voltage

100-240 VAC
±24 VDC (optional)
±48 VDC (optional)


50-60 Hz

Marker Power Consumption

2.1 watts 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″

FH Aerodynamic Wind Area

99.125 in2

Controller Dimensions

23″ x 17.13″ x 6.44″

Controller Weight

44 lbs (20kg)

Protection Rating

IP65, NEMA 4x

* Not included in system consumption


L-864/L-865 System Power Consumption

White Day

80 watts (70 watts with IR)
40 fpm
20,000 ± 25% ECD

Red Night

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

White Night

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


L-866/L-885 System Power Consumption

White Day

110 watts (100 watts with IR)
60 fpm
20,000 ± 25% ECD

Red Night

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

White 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


Intertek FAA L-864 FTS 370d certification
Intertek FAA L-865 FTS 370d certification
Intertek L-885 FTS 370d/r catenary certification
Intertek L-866 FTS 370d catenary certification
Intertek CAR 621 (with infrared)
ICAO 6th Edition
DGAC L-864
DGAC L-865
CSA certificate of compliance
CE Declaration of Conformity FTS 370d



Solar Powered Lighting Datasheet


Current Manual

Vanguard Medium FTS 370d / FTS 370w / FTS 370r / FTS 370c Rev 18 (6.06MB)
Quick Start Guide
Manuals for older product revisions can be found in the Knowledge Base.


Vanguard Medium Firmware
Vanguard Medium SNMP MIB


Flash Technology Vanguard Medium-HD