5A PWM: Operating voltage: DC4.5V-35V Output current: 0-5A Output power: 90W (max) Quiescent current: 7uA (standby) PWM duty cycle: 1% -100% PWM frequency: 20khz Size: 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. MINI 5A PWM: The input voltage is divided into two levels. The default is to open the short contact and the voltage is 5-35V input. If the short contact is connected, the low voltage 3-15V input is suitable. The default is to open the short contact and the voltage is 5-35V input. The low voltage input file can be changed by yourself, or you can take a message and ask us to change it Technical index: (1) Working voltage: DC3V-35V (2) Control power: 90W (maximum) (3) Quiescent current: 0.015A (standby state) (4) PWM duty cycle: 1%-100% (5) PWM frequency: 10khz Shell size: 30MMx wide 24MM (without handle) total height 15MM