Item Type: Speed Controller Product Material: Aluminum Alloy Input Voltage: DC10-55V (Equal to the Rated Voltage of the Motor) Maximum Current: 60A Continuous Current: 40A Support Motor: DC Brushed Motor, Speed Range: 0-100%,Support Forward Reverse Speed Regulation Control Frequency: 15KHZ Wiring Type: Terminal Knob Specification: 100K (with Switch) Shell Size: Approx. 110 x 78 x 38mm / 4.3 x 3.1 x 1.5in Package List 1 x Speed Controller The input voltage must be distinguished between "+" and "", the input voltage should be equal to the rated voltage of the motor 1055V, otherwise it will be burnt. 1Potentiometer with switch function, highpower speed governor switch, more adaptable. 2The shell is uniquely designed to protect the controller board from damage and better and faster heat dissipation. 3DC10V55V PWM brushed DC motor speed controller adjustable drive CW, CCW reversible switch with digital display. 4Shell is made of aluminum alloy, which is very strong, prevents damage, and is durable. 5Support DC brushed motor, speed range 0100%, support forward reverse speed regulation.