These teeny, tiny little boards are even smaller than team Desperados' trophy wall but rated up to 3A. Buck converters are used to 'step down' the voltage in a circuit to a much lower value. This is particularly useful in nerf when working on a blaster that has sensitive electronics such as LEDs or select fire modules. Voltage output is adjusted via the on board potentiometer using a small screwdriver and a voltmeter to read the output. This will need to be done prior to installing the board as they are not preset to any specific voltage. If you think you'll struggle to set one up, get in touch and we'll send you one that's preset to your desired value.