Item Type: DC Motor Speed Controller <br>Input Voltage: DC6-60V <br>Output Voltage: Linear Under Load <br>Output Current: 0-30A <br>Continuous Current: 20A <br>Speed Control Type: Flowing Adjustment <br>Speed Control Mode: Potentiometer (0-5V) <br>Speed Range: 0-100% <br>Control Frequency: 15KHZ <br>Wiring Type: Fence Terminal Block <br>Knob Cable Length: 20cm <br>Motherboard Mounting Size: Approx. 72 x 39mm / 2.8 x 1.5in(length x width) <br>Potentiometer According to the Opening: 7mm <br>Analog Signal 0-5V Speed Control Connection: The Middle of the Potentiometer is the Signal Cable <br>Make Sure the Positive and Negative Connections are correct before powering <br>Input: 6-60V DC <br>Weight: Approx. 66g / 2.3oz <br>Size: Approx. 8 x 4.5 x 3cm / 3.1 x 1.8 x 1.2in<br>1、Adopted of high quality electronic components, and accuracy process, ensure for the durability <br>2、The controller has a knob which is easy to operate. <br>3、Great workmanship, perfect replacement for the old or damaged one <br>4、The adjustable speed range is 0-100% <br>5、The controller has large power and high load1. The input is DC, and it can't be connected to AC (such as 220V AC), otherwise it will burn out the module. <br>2. The positive and negative poles of the power input and output terminals cannot be reversed, otherwise the module will be burned out. <br>3. The motor can be positive or negative. When the direction of rotation is different from the expected, the motor wiring can be changed to change the direction of motor rotation.1 x&nbsp;DC Motor Speed Controller<div>1 x Knob</div>