Potentiometer Knob Yellow 21mm for 6mm Shaft 0.5w led It has three terminals

It has three terminals

and the meter will turn off the auto power after 10 minutes of no action to save energy

50ms/115VAC at full load Hold Up Time 16ms/230VAC 12ms/115VAC at full load

Although the motor gives 500 RPM at 12V

Potentiometer Knob Yellow 21mm for 6mm Shaft 0.5w led It has three terminalsThe knob helps to variate the potentiometer smoothly and it can be used in various Applications. Inner Circle provides a firm grip between knob and potentiometer. Die cast knobs with brass bushings, suitable for spindles with a diameter up to 6. 35mm. The knobs are grooved to accommodate control element mounting nuts. It is suitable for 3590s Bourns precision multiturn potentiometer. Specification Diameter 21mm Height 18. 3mm Suited Spindle Size 6.