Features Ultra-wide working voltage from 6~90VDC to support different working situations. The control power range from 0.01~1000W and the rated current is 5A. Self-contained reverse power protection, control voltage overvoltage protection, 15A fast-blow ceramic fuse. It can be directly controlled by PLC voltage. The board equipped with a potentiometer for speed controlling. The governor can control the rotation speed of the motor steplessly from 0%-100% infinite change, the technology is extremely advanced, the efficiency is high, the torsion is large, the heat is small,has been widely used in industrial production. Specification: Item Type:DC Motor Speed ControllerWorking Voltage: DC6V-DC90V Control Power : 0.01-1000W (Maximum current 15A, rated 5A) Quiescent Current: 0.005A (Standby State) PWM Duty Cycle: 0%-100% PWM Frequency: 15khz Control Voltage: 0-5V (Voltage control type, you can directly control the speed of the motor with PLC) Size:6.4 x 6 x 3cm / 2.52 x 2.36 x 1.18in  Net Weight: 75 g / 2.65 oz(approx.) Package List: 1 x Motor Speed Controller1 x Potentiometer Note: The load must be connected to adjust speed. Package List 1 x Motor Speed Controller 1 x Potentiometer