Now you can set the mood for your pet with Fluker\'s clamp lamp with dimmer. Dimmer switch controls the light and heat output of incandesent bulbs and ceramic heat emitters. This allows you to adjust the temperature of your pet\'s enclosure without buying a new bulb. This dome lamp is made of heavy gauge painted aluminum. Ceramic socket can be used with incandescent bulbs, ceramic heat emitters, and compact fluorescent bulbs. **Note: Dimming function does not work with compact fluorescent bulbs. To use this bulb, the dimmer switch must be completely turned on**