These energy-efficient easy to install rheostat style dimmers are available in a range of power options. For use with all filament lamps (incandescent, halogen, xenon) and suitable for most low power LED fixtures (will not work with high flux LEDs with current regulated drivers). They operate on all 12VDC and 24VDC systems. They incorporate a full positive "off" position eliminating the need for a separate on/off switch. The smallest model (our most popular) will handle loads from 0 through 10 amps. For higher capacity circuits, we offer a 20 amp and 30 amp model. All dimmers are supplied with black rotary dials. Other style dials are available on request.