Answer: rheostat

AnswerCrossword Clue
RHEOSTAT

Brightness regulator

RHEOSTAT

Dimmer, e.g.

RHEOSTAT

Current controller

RHEOSTAT
Current regulator
RHEOSTAT
Dimming gadget
RHEOSTATDimmer switch, e.g.
RHEOSTATDevice that regulates current
RHEOSTATElectrical device.
RHEOSTATRadio-set volume control.
RHEOSTATElectric current regulator.
RHEOSTATElectrical circuit resistor.
RHEOSTATLight-regulating device
RHEOSTATRegulator for houselights
RHEOSTATElectrical resistor
RHEOSTATSlot car controller
RHEOSTATLight-dimming gadget