The Edwards 104FIN Series AdaptaBeacon flashing halogen lights and 104FLED Series AdaptaBeacon flashing LED lights are designed to provide a bright visual indication utilizing special optics within a shatter resistant polycarbonate lens mounted on a polycarbonate/ABS blend base. Suitable for indoor or outdoor installation. When mounted outdoors lens should be mounted facing up. May be panel mounted using the provided locknut or conduit mounted. An integral double threaded (internal/external) mounting nipple accommodates 3/4" (19mm). Double (internal/external) threaded mounting nipple suitable for direct panel mounting or 1/2" (13 mm) conduit mounting. Often used to signal malfunctions in equipment, such as assembly line jams. Can warn personnel that they are entering a restricted area or an area of high danger. They can advise personnel in manufacturing and process areas when an operation is starting or stopping. Ideal for use where many multiple smaller flashing lights are specified.