Product description: cermet resistive material trimming potentiometer for device interior or printed circuit boards which adjustable the resistance less. Through hole dip mounting type. Single turn design cermet potentiometer, square linear. Almost all the knobs on electrical appliances, there are potentiometers inside, there will also be potentiometers on the circuit board, which are used to adjust the current and voltage in the circuit to ensure the normal operation of the components, such as adjusting the volume, brightness, etc.