This product is a digital encoder that comes with a start stop button and can be controlled by an external switch to meet various control needs. The motor has a soft start function, and the current slowly increases when starting the motor without any surge current, effectively protecting the motor and extending its service life. The digital encoder knob is adjustable The motor speed is adjusted with higher accuracy and better consistency than ordinary potentiometers.  Working voltage: DC5V~30V, input anti reverse connection protection Rated current: 5A Maximum current 15A Maximum power: 150W
Working frequency: 1KHz~99KHz adjustable, 1KHz step by step, default frequency 20KHz, accuracy of about 1%
Duty cycle: 0-100%, 1% step
Product size: 79mm * 43mm * 26mm
Parameter power-off saving

Instructions for use:
1. In the default interface: (The default display is the duty cycle)
Short press - switch motor start stop
Counterclockwise rotation - duty cycle decreases
Clockwise rotation - duty cycle increases
Long press - enter the settings interface
2. In the settings interface:
Short press to select the setting parameters one by one, and switch between the lower duty cycle, upper duty cycle, and operating frequency. The lower limit of the duty cycle is displayed in the form of "L"+two digits, the duty cycle, the upper limit is displayed in the form of "H"+two digits or "100", and the operating frequency is displayed in the form of "F"+two digits.
Counterclockwise rotation - corresponding setting parameters decrease
Clockwise rotation - corresponding increase in setting parameters
Long press - exit the settings interface
3. Back STOP port
External switch buttons or 3.3V level can be connected, and once the button is closed or the 3.3V level is pulled down, the start/stop status of the motor can be switched.