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Defender Seal
Categories : Safety: Man Overboard (MOB): MOB Poles / Lights / Mounts
ACR SM-2 Automatic Crew-Overboard Marker Light
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ACR SM-2 Automatic Crew-Overboard Marker Light

  • Includes Plastic Bulkhead Bracket
  • 360° Visibility For Over 3 Mi (5 Km)
  • Battery Not Included, Requires Screw Terminal Battery

  • Item #:  551285
    Brand:  ACR
    Model #:  3940.1
    Shipping Weight:  3.10 Lbs.
    List Price:   $164.50

    Our Price:   $106.99
    Status:   In Stock

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    ACR Automatic Crew-Overboard Marker Light automatically activates when turned in the upright position. When deployed rapidly this light can greatly aid in locating an overboard crew member at night or in low visibility conditions. 

    It automatically rights itself and activates when in the water and begins strobing, operating for up to 60 hours on a 6-volt lantern battery. Perfect for commercial marine, petro-marine, cruisers and any application needing a reliable COB light.


    • Brighter light in all directions
    • Upgraded polycarbonate blend case, improved impact rating; UV, temperature and chemical resistant
    • Perfect for commercial marine, petro-marine, divers, cruisers, and any application needing a reliable COB light
    • Automatically rights itself and activates when in the water
    • High intensity Xenon strobe gives 360° visibility for more than 3 miles (4.8 km)
    • Floats upright in all conditions
    • Minimum 36 hours continuous operating life

    A Matter of Balance

    Marker lights, by design, need to float upright for maximum visibility. The 6-volt lantern batteries provide the ballast for these lights. Although batteries may be the same size, the different chemistries cause them to have varying weights. It is imperative that only the 6-volt battery models suggested are used. Too little ballast and the light will lie over on its side and be ineffective; too much weight and the light may sink. If there are any doubts as to the appropriate weight of the battery, test the light by placing it in shallow water. If it floats upright, it is good, however, if the SM-2 sinks, the battery is too heavy.

    Suggested Screw Terminal Batteries:

    • ANSI/NEDA: 915, 915C, 915D, 915AC
    • Duracell: M915, PC915
    • Rayovac®: 942, 944
    • Eveready®: 510S

    Related Products Price Include
      ACR Repair Kit For Man Overboard Light
  • Repair kit

  • $29.99

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      ACR Replacement Bulkhead Mounting Bracket
  • For ACR Automatic Crew Overboard Marker Light
  • Model SM-2

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      ACR Stainless Steel Life Line Bracket For MOB
  • Designed for Mounting ACR's SM-2 to a Sailboat Lifeline
  • Replaces Bulkhead Mounting Bracket
  • This Bracket does not Comply with IMO / SOLAS / USCG

  • $22.99

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