Victron Non-Isolated Orion IP67 24/12-10A (120W) DC-DC Converter - Bargain Bin

Completely encapsulated: waterproof, shockproof and ignition protected Water, oil, or dirt will not damage the Orion IP67 DC-DC Converter. The casing is made of cast aluminum and the electronics are molded in
resin.
Extra-long input and output cables Thanks to the cables of 1.8 meters in length, intermediate cable interconnections to increase length, even more, will in most cases not be needed. This is important reliability increasing feature in an area were IP67 protection grade is needed.
Wide input voltage range With 15 to 40 Volts input range, a stable output is ensured during surges or sags due to other equipment connected to the same battery.
Protected against overheating It can be used in a hot environment such as a machine room.