The Whirlpool WPW10327523 Washing machine Knob is a substitute part for Whirlpool washing machines. It is the dial that you use to select different wash cycles and settings on your washer. The knob is a basic mechanism. It features a stem that fits into the machine's control panel and links the electrical components. Turning the knob rotates a set of contacts in the control panel, which sends signals to the washer's computer. Such indications inform the computer of the cycle you have selected, and the computer activates the necessary parameters, such as water temperature, spin speed, and agitation intensity.A working washer knob is necessary for using your machine.