

Speed Controller DC Motor 10AhSee More
RioRand 12V-40V 10A PWM DC Motor Speed Controller w/ Knob--High Efficiency, High Torque, Low Heat Generating with Reverse Polarity Protection, High Current Protection
From left to right they are Motor-, Motor+, Power-, Power+
Features:
Control the speed of a DC motor with this controller
High efficiency, high torque, low heat generating
With reverse polarity protection, high current protection