Up to 3 Nautical Miles

Features & Benefits


  • Range up to 3 NM (T=0.74)
  • Vertical divergence 8° (FWHM)
  • Up to 26 cd (IALA peak, white)
  • Installs in minutes; automatic “out of box” activation
  • Operates on three high-temperature-rated NiMH AA batteries; replaceable, recyclable, shelf life up to two years
  • Up to 40 user-adjustable flash patterns with ability to direct enter effective intensity. Automatic adjustment for Schmidt Clausen
  • Next generation, energy-saving Automatic Light Control; five-day data trending regulates intensities for optimal performance throughout the calendar year and longer battery life
  • Premium grade, UV resistant polycarbonate body and lens material
  • Waterproof design; IP 68 immersion
  • Ventilated battery compartment
  • Best-in-class high-efficiency solar cells embedded in polyurethane to maximize energy collection at all latitudes
  • Life expectancy 15 years
  • 3 year warranty


General Specifications

Solar Panel
Best-in-class high-efficiency solar cells. 0.6 W panel
Three high-temperature NiMH AA batteries rated for -40 to 185 ºF (-40 to 85 ºC)
Light Source
High Flux Surface Mount LED
Maximum Peak Intensity
29 cd (White)
Vertical Divergence
8º (FWHM)
Flash Patterns
40 flash patterns
Premium grade UV resistant, polycarbonate body and lens. Waterproof battery compartment with GORE® vent.
Red, Green, White, Yellow and Blue. As per IALA "Optimum" Recommendation E-200-1, December 2008.
Operating Temperature
-22 to 122 *F (-30 to 60 *C) ambient temperature. The M550 will function up to 190 *F (88 *C) internal and surface temperatures.
Storage Temperature
-40 to 176 *F (-40 to 80* C) Not including batteries.
Colour indicator
Yes. Red, Green, White, Yellow and Blue.
0.8 lb (0.37 kg)
Wind Loading
140 knots (72 m/s)
Ice Loading
0.03 psi (22 kg/m2)
Automatic Light Control (ALC)
ALC 2.0 will dynamically reduce brightness to unusually low amounts of sunlight to ensure continued operation. Optimized for improved performance throughout the calendar year.
Programmable with optional compact infrared programmer
IP68 immersion, 24 hrs at 1m
MIL-STD-2020G immersion & damp heat cycling
MIL-STD-810G rain & salt fog
USCG PATON 33CFR66 & CFR67 Class C Pending RoHS, WEEE, IEC 60945, FCC

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