Did you know?
ALL products we sell are factory new and come with the full Manufacturers Warranty!

  ACR SM3 Marker Light
Click to enlarge

ACR SM3 Marker Light

Item #: ACR3947




List Price:




No restocking fees on return.
Click to verify BBB accreditation and to see a BBB report.  


ACR SM3 Marker Light

Model: 3947
  • Bright light in all directions (360° visibility)
  • UV resistant polycarbonate case
  • Light weight and compact in size
  • Easy bracket installation
  • Bracket is included and maintains same hole pattern as SM-2 for easy retrofit
  • Automatically rights itself and activates when in the water
  • High intensity LED strobe
  • Floats upright in all conditions
  • Minimum 40 hours continuous operating life at 30oC (86oF) or over 24 hours at -1oC (30oF)
  • User Replaceable AA Energizer L91 Lithium Batteries (Not Included)

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 30oC (86oF) or over 24 hours at -1oC (30oF). 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. Additionally, while the SM-3 and its bracket are significantly smaller than the SM-2 counterparts, the SM-3 bracket conveniently maintains the same mounting hole pattern as the SM-2, allowing for easy retrofit with no additional adapter plate required.

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. As per USCG and SOLAS requirements for passenger and cargo vessels, at least one-half of the total number of lifebuoys on the vessel must be fitted with a self-igniting light. Minimum carriage requirements are based on the length of the vessel and can range from a minimum of four to a minimum of fifteen lifebuoys with self-igniting lights per vessel.

Rugged design leads to greater flexibility of use. While the SOLAS standard only calls for a 30-meter drop test, the SM-3 has been drop tested to 76 meters. This makes the SM-3 a versatile option for use on a variety of platforms or vessels of different sizes.

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

NameSM-3 Lifebuoy Self-Igniting Marker Light
Product DescriptionStrobing Crew-Overboard Marker Light
Model NumberSM-3
ApplicationCommercial maritime applications including petro-marine, workboats, cruise liners, tugs and workboats, supply vessels, cargo vessels, passenger vessels, fishing charters etc.
Length9.9" (253 mm)
Diameter2.2" (56 mm)
Light Only0.66 lbs (300 g)
Light with Batteries0.71 lbs (330 g)
Light with Batteries & Bracket0.90 lbs (406 g)
Batteries2 AA Lithium Batteries (L91) / User Replaceable (Not Included)
MaterialUV Resistant Polycarbonate
ColorInternational Safety Orange
ActivationAutomatic gravity switch
OperationThrow SM-3 overboard or turn upright and strobe light will automatically begin to flash
Light IntensityMinimum of 3 candelas per flash in all directions of upper hemisphere
Visibility360o visibility
Flash Rate50—70 times per minute
LampUltra-Bright LED
Operational Life40 hours over 3 cd at 30oC (86oF)
Drop TestDrop tested to 76 meters (USCG/SOLAS/MED only call for 30 meters)
Warranty1 year
Mounting BracketUV resistant polycarbonate bracket included / Same mounting hole pattern as previous SM-2 Model for easy retrofit

Did you Know?

ALL products we sell are factory new and come with the full Manufacturers Warranty!

ACR SM3 Marker Light - Rescue Lights/Strobe Lights

9:30 AM - 5:00 PM Eastern, Monday - Friday

facebook twitter