Waterproof transformer converts 120v-277v AC (wall outlet) to 12/24 Volts dc - 11 amps max(-12 volt). the larson electronics dcp-11 waterproof power supply converts commonly used 100 - 277Vac electrical current to 12Vdc at11 amps. This converter is designed to be hardwired into home, boat or vehicle electrical supplies where the voltage is typically within the 100-277vac range and reduces it to 12Vdc, allowing users to use standard AC power to operate equipment like our LED light bars and hid go lights that require 12 volt dc current. The dcp-11-12v 106 watt power converter provides a safe and effective way for users to tap into and utilize common 100 to 277 volt AC power sources and convert this current to 12 Volts dc or 24 Volts dc for use with equipment that requires 12/24 volt electrical power. This unit can be operated with input current ranging from 100 to 277 vac and will output 106 watts at 11 amps on a 12 volt dc current or 6. 25 amps on a 24 volt dc current. This power converter features an IP67 rated waterproof design, making it suitable for indoor or outdoor use and includes integral short circuit and overload protection that will shut down the unit in case of faults and overloads to protect the unit and connected equipment from damage. Click photo to enlarge click photo to enlarge the small size and wide input voltage range of this unit make it ideal for operating larson electronics LED light bars, go lights and other equipment that requires 12Vdc current indoors or outdoors and anywhere 12 volt dc power is not readily available. Measuring 8. 7 inches long by 2. 5 inches wide by 1. 5 inches deep, this unit weighs less than one pound and is mounted with two conventional screws via slots that allow removal and repositioning simply by loosening the screws.