Envistia Mall 12V to 3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module by

Converts a 12V input voltage (will operate with any input voltage from 8V to 24V) to 3V DC (+10% -0%) output at up to 3A Up to 9W output power (3V at 3A) Fully sealed and waterproof Overload / over-current / over / low voltage protection, stable performance The inputs and outputs are labeled on the sticker on top of the converter, the red and black wires are the + and - 12V input, and the red and yellow wires are the + and - 3V output.