The L160 lifebuoy light is a water-activated system designed for automatic actuation by the act of releasing the lifebuoy to which the unit is attached, such that the battery is unsealed ready for use when the light is pulled from the housing. The light illuminates when the unsealed battery is immersed.
the L160 lifebuoy light has a 5-year storage life and uses the famous water-activated, silver chloride-magnesium batteries first developed by McMurdo, for intrinsically safe operation
the L160 is both corrosion and tamper-proof, so the batteries cannot be removed or expended accidentally, nor can they be activated unless removed from the container and floated in fresh or salt water
the lamp is sealed inside a tough, polycarbonate dome