1、Adopted of high quality electronic components, and accuracy process, ensure for the durability 2、The controller has a knob which is easy to operate. 3、Great workmanship, perfect replacement for the old or damaged one 4、The adjustable speed range is 0- 5、The controller has large power and high load <div class="wang-edit-text">Item Type: DC Motor Speed ControllerInput Voltage: DC6-60VOutput Voltage: Linear Under LoadOutput Current: 0-30AContinuous Current: 20ASpeed Control Type: Flowing AdjustmentSpeed Control Mode: Potentiometer (0-5V)Speed Range: 0-Control Frequency: 15KHZWiring Type: Fence Terminal BlockKnob Cable Length: 20cmMotherboard Mounting Size: Approx. 72 x 39mm / 2.8 x 1.5in(length x width)Potentiometer According to the Opening: 7mmAnalog Signal 0-5V Speed Control Connection: The Middle of the Potentiometer is the Signal CableMake Sure the Positive and Negative Connections are correct before poweringInput: 6-60V DCWeight: Approx. 66g / 2.3ozSize: Approx. 8 x 4.5 x 3cm / 3.1 x 1.8 x 1.2in<style>.w-e-text table td,.w-e-text table th,.wang-edit-text table td, .wang-edit-text table th{border: .5pt solid #000;};.w-e-text table,.wang-edit-text table{border: 1px solid #000 !important;}</style> 1 x&nbsp;DC Motor Speed Controller1 x Knob