1. It can support AC and DC input. There is no problem with power polarity. 2. Ultra-high voltage application range. DC supports 15-160VDC input. AC supports 12V-110V AC input. Note: When this controller controls the DC motor, the maximum power supply is 110VAC, and it cannot be directly connected to 220V. It is recommended to use a power supply below 90V. 3. Extra-large heat sink with mounting holes. 4. Ultra-high power control. It can support 5A current. 5. In addition to the PWM speed regulation generated inside the board, it can also support external PWM signal input control speed regulation. The external PWM input requirements are: level 3.5-12V VPP, frequency 1K-5KHZ, and duty cycle of 0%-93%. It is especially suitable for MCH3 spindle control speed regulation. When equipped with external PLC control, a 2K resistor must be connected in series. Supports a wide range of motors. It can basically drive and control the speed of most DC motors on the market. As long as the DC resistance of the motor is greater than 2 ohms, it can be used. Please pay special attention to the conversion rate of about 97%. The power consumption of the board itself is different at different voltages. When the motor load is 160VDC and 2A, the limit does not exceed 2W. This driver cannot adjust the speed of DC motors with a DC resistance of less than 2 ohms. When this control board is equipped with a DC motor, it is suitable for motors below 110V with a current within 5A and a resistance value greater than 2R. Equipped with a 5A fuse, the protection performance is better. There is a power indicator light, which is more convenient to use. A high-power voltage-limiting resistor is used to reduce the overall module heating and improve working stability. The wiring is simple and no manual is required. Color: As shown Material: PCB Package Contents: 1set x DC motor speed regulator Only the above package content, other products are not included. Note: Light reflection and different displays