






🚨 Light up your safety game — be the beacon everyone trusts!
The ACR SM3 Lifebuoy Self-Igniting Marker Light is a compact, high-performance emergency marker designed for maritime safety. Featuring a 1000 candela LED light with 360° visibility, it meets USCG, SOLAS, and MED standards. Powered by user-replaceable AA lithium batteries and housed in UV-resistant polycarbonate, it offers reliable, waterproof performance with easy bracket mounting compatible with previous SM2 models.




| Color | Safety Orange |
| Shape | sphere |
| Material | UV resistant polycarbonate |
| Finish Type | UV Resistant |
| Light Source Type | LED |
| Shade Material | Polycarbonate (PC) |
| Power Source | Battery Powered |
| Brand | ACR |
| Item Weight | 0.66 Pounds |
| Number of Batteries | 2 AA batteries required. |
| Style | Modern & Compact |
| Voltage | 3 Volts |
| Brightness | 1000 candela |
| Light Source Wattage | 5 Watts |
| Mounting Type | bracket mount |
| Bulb Features | Automatic Immersion Activation, Strobe Light Pattern |
| Number of Light Sources | 1 |
| Are Batteries Included | No |
| Bulb Base | E26 |
| Manufacturer | ACR Electronics |
| Item Weight | 10.6 ounces |
| Product Dimensions | 9.9 x 2.2 x 2.2 inches |
| Item model number | SM3 |
| Batteries | 2 AA batteries required. |
| Manufacturer Part Number | 3947 |
| Position | Center |
| Special Features | Waterproof |
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