12 Volt DC Dimmer for LED, Halogen, Incandescent - RV, Auto, Truck, Marine, and Strip Lighting - STANDARD SHAFT - SILVER Dims up to 60 watts (4.2 amps) of incandescent, halogen, or LED lighting reducing heat and power drain on batteries For new custom installations or to replace an existing on/off switch in an RV lamp fixture to create low-light ambiance Perfect for RVs, trailers, boats, cars, trucks, or anywhere 12 volt DC power is present. Fits in small spaces where other dimmers can't Package includes: dimmer assembly, 3 wire nuts, optional diode for fan speed control, and quick start instructions. Available in 2 shaft lengths. This item is the standard shaft model Engineered and manufactured in the USA