DC Motor Speed Controller
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<br />Input supply voltage: DC 9 V~-60V
<br />Max current: 20 A
<br />Sustained current: 18 A
<br />PWM frequency: 25 KHz
<br />Adjustable speed range: 0%-100%
<br />Speed adjustment way: Potentiometer
<br />Output voltage: Linear under load
<br />Speed control type: Basins
<br />Size(L*W*H):90 x 50 x 35 mm
<br />Cable Length: 130 mm
<br />
<br />Features:
<br />1.Suitable for the DC motor (or DC load) within 20A.
<br />2.It with metal shell and connective label,very easy to install and use.
<br />3.Potentiometer with adjust speed swtich function,and button swtich function.
<br />
<br />Operating instruction:
<br />Before you attempting to wire the controller, make sure power is off.
<br />WARNING:
<br />DO NOT REVERSE POSTIVE AND NEGATIVE POWER LOADS.THIS WILL DAMAGE THE CONTROLLER.
<br />TO CHANGE MOTOR DIRECTION, INTERCHANGE THE POSITIVE AND NEGATIVE WIRES OF MOTOR.
<br />1.Connect wires refer to the &quot;wiring diagram&quot;
<br />2.Turn on the power.
<br />3.Adjust the potentiometer.
<br />
<br />Connection mode:
<br />Red Line: Power + Black Line: Power -
<br />Blue Line: Motor+ Green Line: Motor -
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<br />Package Included 
<br />1 x DC Motor Speed Controller with metal shell
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<br />Notes:
<br />1.Manual measuring, please allow 1 ~ 3 cm error,thank you.
<br />2.Cannot be used in electric vehicle with optimal knight on the gear motor.