ACR Electronics · PRODUCT GUIDEACR Electronics SM-3 SOLAS Lifebuoy Marker Light Review
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Review
Manufacturer information and review searches have been checked. No eligible independent overall rating was verified, so this product remains unscored.
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A self-righting marker light for a boat’s lifebuoy. The SM-3 switches on when upright using a gravity switch, and its bracket fits the mounting pattern used by the older SM-2.
Consider before buying
It takes two Energizer L91 lithium AA cells, supplied separately. The minimum output is 3 candela with 50–70 flashes per minute; this is a marker rather than a torch for searching underwater.
Our take
A sensible replacement when your lifebuoy installation suits the SM-3 bracket. Check the complete mounting arrangement and required approvals with your vessel supplier before choosing it for a commercial boat.
Specifications at a glance
- Equipment type
- Marine safety equipment
- Role
- Lifebuoy marker
- Activation
- Gravity switch
- Length
- 253 mm
- Diameter
- 56 mm
- Battery type
- 2 × Energizer L91 lithium AA
A closer look at SM-3 SOLAS Lifebuoy Marker Light
Editorial profile written
Facts listed by the source
- Role
- Lifebuoy marker
- Activation
- Gravity switch
- Length
- 253 mm
- Diameter
- 56 mm
- Battery type
- 2 × Energizer L91 lithium AA
Options in a listing may refer to different variants. Confirm the exact version and package before ordering.
Questions to settle before buying
This checklist uses a provisional grouping from the catalogue name. Confirm the intended use in the manufacturer instructions.
- What is the exact part number and compatible model or revision?
- Is fitting a user task or does the manufacturer require an authorised technician?
- Does the listed package contain the quantity and fittings you need?
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What still needs checking
Independent overall rating not verified.
We have not yet added independent review evidence for this entry. Manufacturer claims do not establish long-term reliability, value or a performance score.
Where this research comes from
Read the source ↗ · Open the product listing ↗
Exact model page · Live exact manufacturer page read · Catalogue audit 2026-10-03.
Source matching and feature extraction are automated. An editorial profile, independent review and hands-on test are separate things; none is implied by this audit.
