Neptun Light dimmable PAR-38 8,000 hour compact fluorescent lamp features flood light reflector, high luminous efficiency, new patented Amalgam technology, works in any position, can be used indoors and outdoors and is the exact same size as a traditional halogen PAR38. Applications include tracklights, recessed cans, wardrobe closets, driveways, walkways, yards, gardens, open and totally enclosed fixtures. Dimmable 10-100 percent. Use with Occupancy Sensors made by Neptun and any dimmer made after 1995.