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#potentiometer
#variable resistor
#adjustable resistor
#knob control
#electronics
#electrical control
#voltage control
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#power control
#knobs
#voltage control
#circuit breaker panel
#dimmer switch
#manual control
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#voltage control
#power control
#electronic controller
#regulator
#technical control
#potentiometer #variable resistor #adjustable resistor #knob control #electronics #electrical control #voltage control