The Frigidaire 903136-9020 Range Surface Element Switch controls the power supply to the surface heating elements, allowing accurate temperature adjustment during cooking. It operates by regulating the electrical current that flows to the selected burner, cycling the element on and off to maintain the desired heat level. Installed behind the control panel, the switch connects to the b... https://www.hnkparts.com/903136-9020-frigidaire-lg-surface-unit-switch