ACR Light 3940 SM-2 MOB - Star Marine Depot
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Our Price 
$119.95 
List Price $176.00

ACR 3940 SM-2 MOB Light

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List Price $176.00
Our Price 
$119.95 

3940.1 SM-2 Marker Lights - Automatic Crew Overboard Marker Light

With 70,000 peak candlepower, these high intensity Xenon strobe marker lights clearly mark crew-overboard sites with each brilliant flash.

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 Battery Types, Screw Terminal Batteries:

ANSI/NEDA: 915, 915C, 915D, 915AC
Duracell: M915, PC915
Rayovac®: 942, 945
Eveready®: 510S

Suggested Battery Types, Spring Terminal Batteries:

ANSI/NEDA: 908, 908C, 908D, 908AC
Duracell: M908, PC908
Rayovac®: 941, 944
Eveready®: 509, 1209
Energizer: EN529 (not 529)
Panasonic: W-4FD

Size 13.8” x 4.8” (35 x 12 cm)
Weight 1.75 lbs (794 g)3.94 lbs (1.13 kg) with battery
Material UV stable polycarbonate blend
Color International orange
Operation Throw unit overboard or turn uprightand light will begin to work
Waterproof Drop tested 100 ft (33 m) into water
Battery Type 6V Lantern style battery. Go towww.acrelectronics for approval list
Beam Angle Omnidirectional 360°
Visibility 360° visibility for over 3 miles (4.8 km)
Flash Rate 60/minute
Lamp Xenon flash tube
Certification Complies with IMO/SOLAS/LSACode; USCG 161.010 & USCG 161.110approved; Tested to UL 1196
Carton Dimensions 6.5 x 5.0 x 11” (16.5 x 12.75 x 28 cm)
Units Per Carton 4
Carton Weight 15 lbs (7 kg)
Limited Warranty 1 year

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3940.1 SM-2 Marker Lights - Automatic Crew Overboard Marker Light

With 70,000 peak candlepower, these high intensity Xenon strobe marker lights clearly mark crew-overboard sites with each brilliant flash.

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 Battery Types, Screw Terminal Batteries:

ANSI/NEDA: 915, 915C, 915D, 915AC
Duracell: M915, PC915
Rayovac®: 942, 945
Eveready®: 510S

Suggested Battery Types, Spring Terminal Batteries:

ANSI/NEDA: 908, 908C, 908D, 908AC
Duracell: M908, PC908
Rayovac®: 941, 944
Eveready®: 509, 1209
Energizer: EN529 (not 529)
Panasonic: W-4FD

Size 13.8” x 4.8” (35 x 12 cm)
Weight 1.75 lbs (794 g)3.94 lbs (1.13 kg) with battery
Material UV stable polycarbonate blend
Color International orange
Operation Throw unit overboard or turn uprightand light will begin to work
Waterproof Drop tested 100 ft (33 m) into water
Battery Type 6V Lantern style battery. Go towww.acrelectronics for approval list
Beam Angle Omnidirectional 360°
Visibility 360° visibility for over 3 miles (4.8 km)
Flash Rate 60/minute
Lamp Xenon flash tube
Certification Complies with IMO/SOLAS/LSACode; USCG 161.010 & USCG 161.110approved; Tested to UL 1196
Carton Dimensions 6.5 x 5.0 x 11” (16.5 x 12.75 x 28 cm)
Units Per Carton 4
Carton Weight 15 lbs (7 kg)
Limited Warranty 1 year

Write A New Review

ACR 3940 SM-2 MOB Light has not been reviewed yet. Review Now.

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