This small PCB gives the trimmer resistor inside of your mod a more finished look. It fits the popular BI Technologies/ TT Electronics Model 93 1/2 inch thumb wheel potentiometer (http://www.mouser.com/ProductDetail/BI-Technologies-TT-Electronics/93PR200LF/?qs=UjOdgN%2FjCTWH6fryvuD2%2Fg%3D%3D).
This mini board is designed for DC/DC regulator builds (OKR, Raptor, Delta, etc.,) that normally call for 200 ohm potentiometers. The PCB can come with a 1206 SMD package sized 220 ohm resistor installed. Use this PCB only on mods that DO NOT already have 220 ohm resistor wired in.