Product Description: OSHA Roof Hatch Alert Light:The "Hatch Alert " is a patent pending design to alert personnel that the rooftop hatch door is in the open position. And that the threat of Danger Exists.

A very bright red xenon strobe light emitting 60 double flashes per minute.Light is activated as soon as the hatch door is lifted upward 30 degrees.The strobe automatically turns in.OFF in. when the hatch is in the closed position.

Mounted on the inside surface of the hatch with its magnetic base. the Hatch Alert features a built-in tilt switch that is located in its battery compartment. This switch automatically triggers the strobe to its flashing mode when the hatch is lifted upward. Two D-Cell alkaline batteries provide 50-60 flashing hours.Can be used on any vertical door opening to warn that care should be exercised.