Description: Features: 5A Mini DC Motor PWM Speed Controller By screwing the potentiometer, you can turn off power supply output. High voltage and high current resettable fuse, overcurrent automatic disconnection, power off for cooling for a few seconds fuses automatic recovery. Default disconnection of short circuit point. Please note: the operating voltage can be switched to 4.5V-35V by bridging the connectors marked '4.5V-35V' on the PCB. Specifications: Operating Voltage: DC 4.5V-35V Output Current: 0-5A Control Power: 90W(Max.) Quiescent Current: 7uA(Standby) PWM Duty Cycle: 1 percent - PWM Frequency: 20khz Size: 26x30mm or 1.02x1.18" Quantity: 1 Pc Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Speed Controller Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.