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ACR Electronics

ACR SM-3 SOLAS Lifebuoy Marker Light [3947]

ACR SM-3 SOLAS Lifebuoy Marker Light [3947]

Regular price $129.99 USD
Regular price $169.95 USD Sale price $129.99 USD
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SM-3 SOLAS Lifebuoy Marker Light 

The SM-3 is a high intensity LED strobe which provides 360° visibility for approximately 2 miles.  This compact yet durable marker light facilitates rescue by automatically activating and beginning to strobe when in the water, working for over 40 hours at 30°C (86°F) or over 24 hours at -1°C (30°F).  Perfect for commercial marine, petro-marine, cruisers, and any other application needing a reliable Crew Overboard Marker (COB) light, the SM-3 floats upright in all conditions, ensuring it will keep shining when you need it the most.

With a minimum light intensity of 3 candelas throughout its entire operating life, this high intensity LED strobe clearly marks a crew-overboard site with each brilliant flash.  It automatically rights itself and activates when in the water, ensuring that activation is never an issue that a crew member in distress needs to worry about.  The SM-3 operates on 2 AA Lithium batteries and the batteries are user replaceable, allowing the potential for a longer product life than the many disposable lifebuoy lights on the market. 

The supplied mounting bracket holds the SM-3 secure in the roughest of conditions but it is still readily accessible when needed in an emergency. 

The SM-3 is USCG/MED/SOLAS approved for use around the world and this durable LED marker light therefore provides an excellent option for vessels needing to meet USCG and SOLAS carriage requirements for lifebuoy self igniting lights. 

With its easily replaceable Lithium AA battery power source, the SM-3 will give years of service and be ready when called upon.


  • User replaceable AA Lithium batteries 
  • Built-in buoyancy
  • LED strobe light
  • Weatherproof construction
  • 360° Visibility
  • Small, rugged and lightweight design


  • U.S.C.G.
  • SOLAS 
  • MED 

Technical Specifications:

  • Dimensions (L x Dia.) - 9.9" x 2.2" (25.3 x 5.6 cm)
  • Weight (without bracket) - .71 lb (330g)
  • Battery - AA Lithium x two (2)
  • Activation - Automatic
  • Light Intensity - 3 Candelas per flash 
  • Light Range - 2 miles
  • Light Source  - LED
  • Visibility - 360°
  • Buoyant - Yes

In the Box:

  • SM-3 SOLAS Marker Light
  • Mounting bracket
  • Instruction manual 

*Sold as an Individual 

WarningWARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to

WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.


  • Waterproof: Yes
  • Visible Range (Miles): 2
  • Activation Method: Water/Manual
  • Operational Life (Hours): 24-40 Hours
  • Battery Type: AA
  • Box Dimensions: 3"H x 3"W x 11"L WT: 1 lbs
  • UPC: 791659039472

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