The L8-3 is a water activated personal rescue light that is Coast Guard approved for use on life vests. The lamp and lens combo of the L8-3 produce a powerful light that’s visible for over one mile. This rescue light has a water activated battery, and once it’s triggered, it’ll last for 8 hours.


Out of stock


  • Coast Guard approved for use on life vests
  • Lamp and lens combo produces brilliant light visible for over 1 mile
  • Operates in fresh or salt water
  • Standard length lead wire 18 inches (46 cm); some custom lengths available (minimum quantities apply)
  • Water activated battery
  • Operation life exceeds 8 hours
  • 5-year storage life

Additional information

Weight 0.00 lbs

Product Number

3720.0180 Bulk only


3.1 x 1.8 x 1.6” (7.9 x 4.6 x 4.1 cm)


1.8 oz (51g)

Battery Life

5 years

Battery Type

Cuprous iodide/magnesium

Operational Life

Exceeds 8 hours

Stowage air temperature range

-30°C to +65°C

Operating temperature (in water)

-1°C to +30°C


High impact styrene


Pull tab, immerse in water to activate


10 ft ( 3 m)

Beam Angle

Lens simultaneously focuses a beam of light upward/directional and a ring of light all around


Lamp and lens combo produce brilliant light visible for over 1 nautical mile (1.85 km)



Luminous Intensity

>= 1 cd


USCG 161.012/22/0 approved

Limited Warranty

1 Year


This product is warranted against factory defect in material and workmanship for a period of 1 (one)* year from date of purchase or receipt as a gift. During the warranty period ACR Electronics, Inc. will repair or at its option, replace at no cost to you for labor, materials or return transportation.
For further assistance, please contact our Technical Service Department at:


ACR Electronics, Inc.

5757 Ravenswood Road, Fort Lauderdale, FL 33312-6645

Email: service@acrelectronics.com

Telephone: +1 (954) 981-3333

Fax: +1 (954) 983-5087
This warranty does not apply if the product has been damaged by accident or misuse, or as a result of service or modification by other than the manufacturer.  The COMPANY MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO THIS PRODUCT, except as otherwise expressly stated in the previous paragraph. The Company shall not be liable for consequential or special damages. In order to place the warranty in effect, choose a form above and complete it entirely. Or you may fill out the registration card accompanying your product (if applicable) which must be returned to ACR Electronics, Inc. within ten days of purchase.