Home / Replacement parts / Control Box and Components / Knob for potentiometer (Knob) Knob for potentiometer (Knob)$2.41 Knob for potentiometer (Knob) quantity Add to Cart SKU: Knob Category: Control Box and Components Product ID: 2481 Description Description Replacement knob for potentiometer that controls spray time adjustment Related products Timerco Digital Time Clock 120VAC (TM619-120V) $43.75 Add to Cart Remote Control Receiver (RCR-LR-24) $17.56 Add to Cart Analog Time Clock 24VAC (FM1QTUZ-24) $84.13 Add to Cart