The OL4 is a light-weight, high-performance hazard marker with superior solar energy management. Designed for tough industrial locations such as mines and constructions zones, the OL4 is ideal for marking ground-hazards, fences, barricades and other construction hazards on site.

  • Self-contained in a durable, rugged enclosure
  • No specialized work crews required: simple to install and relocate
  • User-friendly design: on-board interface offers easy configuration and programming
  • Low maintenance: replaceable battery pack with life expectancy of 5 years
  • Tested at the toughest industrial standards
  • Light environmental footprint with natural solar charging, recyclable batteries and RoHS compliant design
  • Made in USA
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Solar Panel

High-efficiency solar cells with bypass and blocking diode function.Includes Maximum power point tracking (MPPT) for optimal energy collection

Battery Best-in-class battery pack. Tool-less, replaceable and recyclable with extreme temperature range. Provides status - Good, Charge or Bad (replace)
Light Source High Power LED. Consistent intensity provided by colour-specific, temperature-corrected LED drivers  
Maximum Peak Intensity 4 candela steady-on, 18 candela flashing, 12.5% duty cycle (Red LEDs)
Colours Red, Green, White, Yellow, Blue
ICAO and SAE25050 (FAA) compliant chromaticity
Colour Indicator FAA Eng. Brief 67 compliant
Flash Patterns  256+
Energy Management System (EMS) Intelligent microprocessor
Automatic Light Control (ALC) Reduces brightness in response to unusually low amounts of sunlight for continued function
Programming Optional infrared programmer available
Construction Premium grade, UV resistant, polycarbonate/polysiloxane body and lens with waterproof vent (double O-ring sealing)
Operating Temperature -45° to 124° F (-43° to 51° C)
Storage Temperature -45° to 176° F (-43° to 80° C)
Weight 3.5 lbs (1.58 kg)
Wind Loading 400 mph (180 m/s)
Humidity, Immersion, Shock and Vibration MIL-STD-202G
Solar Radiation, Salt and Fog MIL-STD-810G
Compliance RoHS,  CE