PROFESSOR MOTOR (Ref.: PMTR-2111).
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Professor Motor "Scale Racer PRO" Model Electronic Slot Racing Controller - Recommended Operating Voltage : 14 to 19 volts - POSITIVE polarity - Includes 25 Ohm variable brakes, variable sensitivity, internal aluminum heat sink, heavy 13 gage silicone leads & solid copper alligator clips w/boots - New "Platinum Series" transistor technology - Recommended Applications : 1/32 & HO home, club and low end commercial track racing through 16D Motors.