Specifications:Operating voltage: 5V-35VOutput current: 0-5AOutput power: 90W (max)Quiescent current: 7uA (standby)PWM duty cycle: 1% -100%PWM frequency: 20khzSize: 30mm x 26mm x 14mm (Without Handle)Precautions:DC motor governor input is DC, can not directly connected to the AC (for example: home 220V AC), otherwise it will burn!DC power supply positive and negative terminals do not reverse, otherwise the governor may be damaged.The motor can be positive or negative, when the direction of operation and expectations do not match, you can adjust the line order to change the direction.Adjust the potentiometer knob to change the governor output duty cycle, the motor speed changes.Color: As shownMaterial: PC+MetalPackage Contents:5 X DC PWM DC Motor Speed ControllerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.