The device is attached to a lifebuoy.
When the lifebuoy is released, the light and smoke signal are automatically activated upon contact with water.
The signal is designed to be visible day or night.
It is a required safety essential for ships, commercial, and leisure boats.
The light is typically white and can burn continuously or flash. It must have a battery that provides at least 2 hours of power.
This is a safety device used in maritime environments to mark the position of a person who has fallen overboard.