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White Medium Intensity Strobe System
Red Medium Intensity Strobe System
FAA Type: L-864 or L-865 Medium Intensity Lighting
ICAO Type: Type A or B Medium Intensity Obstacle Light

ETL Certified: 

FAA Advisory Circular 150/5345-43F 

Compliant for use with: 
ICAO Annex 14, MIL-C-7989, DGAC of Mexico, CAR 621.19 
The FlashGuard 2000B Series Medium Intensity Lighting System combines a daytime white strobe light and a night-time white flashing light into a single flash-head. The system is also available as a red flashhead which can be used at nigh tin place of red incandescent lighting, for much longer light source life. The flash-head is powered and controlled by a power supply that can be mounted remotely at the base of the structure.The power supply constantly monitors the operation of the system, and provides alarm contact closure upon any failure. The system automaticallyswitches between day, twi-light, and night intensities by the use of a calibrated photo-cell. FlashGuard 2000B White flashhead incorporates a light blocking strip that minimizes ground scatter light, resulting in a community friendly lighting system.


Medium intensity obstruction lighting systems are typically used on structures between 150’ (45M) and 500’ (150M) above ground level to provide aviation safety. The use of a medium intensity white strobe during the daytime typically eliminates the need to paint the structure with aviation orange and white stripes. The use of a red flashing beacon at night provides a “community friendly” light. Hughey & Phillips medium intensity obstruction lights are designed for lighting tall structures such as communication, television and radio towers, chimneys, cooling towers, tall buildings, catenary river crossings and bridges.


System Features:

  • Single flashhead provides white or red medium intensity operation with no moving parts.
  • Precise optics minimize ground scatter light
  • Alarm contacts provided for connection to any monitoring system
  • Rugged design of flashhead and power supply is suitable for outdoor installation in any climate


Flashhead Features:

  • Internally triggered Xenon strobe tubes utilized for long-life and maximum efficiency, without creating corrosive ozone
  • Parabolic reflector optics and linear strobe tube optics combination provides very precise optics and blocks ground scatter light in both red or white operation
  • Lens raises and locks in place, providing easy access to strobe tubes
  • Only three components used in flashhead - minimal maintenance required at top of structure
  • Safety interlock switch included
  • No moving parts
  • High temperature, UV resistant acrylic flashhead lens


Power Supply Features:


  • Provides power electronics, timing circuitry, and monitoring for lighting system
  • Automatic day/night intensity control
  • Manual intensity override
  • Easily accessible components
  • Plug-in-play circuit cards
  • Control and monitoring for up two sidelight levels with four steady burning obstruction lights
  • Fail-safe monitoring system with up to five remote alarm contacts
  • Stainless steel NEMA 4X enclosure
  • Low power consumption





Photometric Day Mode (White)

Night Mode (White or Red)

Beam Spread

Horizontal Coverage

Ground Scatter

Flash Rate


20,000 candela ± 25%

2,000 candela ± 25%

3° minimum

360°, omni-directional

<3% Light Output at -10° Vertical

24FPM Red Night



Will withstand exposure to

-55° to +55° C (-67° F to +130° F)

95% relative humidity 

Wind-blown rain direction 

Salt-laden atmosphere 

5-1/8" x 6-3/4" Mechanical -40° to +55° C (4) #8 Holes



Weight, Flashhead

Weight, Power Supply

Power Supply Enclosure

Flashhead Lens Material

10 kg (22 lbs)

24 kg (53 lbs)

304 Stainless Steel - standard                    

High Temp/UV Resistant Acrylic

Stainless Steel - optional



Input Voltages

Input Frequencies

Power Consumption, Day

Power Consumption, Night

Peak Inrush Current

Available Alarm Contacts
(form C dry-contact)

120, 230/240, 277, 480 VAC               

50 or 60 Hz

208 Watts

133 Watts

7A @ 120VAC

Power Failure, Mode Status, Strobe Failure, Sidelight #1 Fail, Sidelight #2 Fail