Feature: 1. ADJUSTABLE DIRECTION: Motors can be connected without any positive or negative direction. The direction can be changed by adjusting the line order. 2. WIDE RANGE OF VOLTAGE: The adjustable voltage range of the DC motor governor is very wide, with an ultra wide range of 6V to 90V. 3. STABLE PERFOMANCE: The motor adopts electronic control to adjust the working speed, and the performance is reliable and stable. 4. FLAME RETARDANT HOUSING: The metal casing of the motor is highly flame retardant, making it safer to use. 5. EASY INSTALLATION: There are mounting holes on the back cover of the motor, making it more convenient for you to install the motor. Specification: Item Type: DC Motor Controller Material: Metal,electron component Input V1oltage: DC12V to 48V Rated Current: 20A Quiescent Current: 0.005A (standby state) Rated Power: 300W Voltage Regulation Range: PWM output range is 0% to 100%, the motor is adjusted to stop and run at the highest speed PWM Frequency: 25kHZ Motor Positive and Negative Direction: The motor can be connected regardless of positive and negative, and the direction can be changed by adjusting the line sequence. Package List: 1 x Motor Controller Note: This type of governor is only used for brushed DC motors, not suitable for brushless DC motors, and cannot be used as a voltage regulator1. The input of the DC motor governor is direct current and cannot be directly connected to alternating current, otherwise it will burn out2. The positive and negative poles of the DC power supply cannot be reversed, otherwise the governor will be damaged3. The motor can be positive or negative. When the running direction is inconsistent with the expectation, the direction can be changed by adjusting the line sequence4. The potentiometer knob can change the output duty ratio of the governor, thereby changing the motor speed