A variable resistor that is used for control, such as the volume control on a radio. It divides the voltage in a way that is proportional to its resistance. It consists, in one form, as a wiper or slider that can be moved across fixed contacts, which varies the resistance. The greater the resistance, the less electricity flows through the potentiometer. To one extreme of the wiper’s movement, there is a maximum resistance and no electricity flow. At the other extreme, there is no added resistance, and electricity flow is a its maximum for the circuit in which the potentiometer is located. A Zmesh or Tuff Cable system uses a potentiometer in their control boxes.