Professor Motor "HO & 1/32 RENTAL" Model Electronic Slot Racing Controller Great quality basic "house" controller. Handles come half in one color, half in another, to differentiate them from the retail units. Recommended Operating Voltage Range : 16 to 19 volts - POSITIVE polarity - Includes dual circuit breaker system for robustness against mis-connection, internal aluminum heat sink, 13 gage silicone insulated leads & solid copper alligator clips w/boots - New "Platinum Series" transistor based technology - Recommended Applications : 1/32 & HO, home, club and commercial track racing through JK Falcon Motors Assorted mixed handle colors. Standard with XLR connector, alligator clips by request.