5V isolate with MCU, and effectively protect MCU 5V power indicator on board. Voltage indication of motor driver output end can solder heat sink. Just need four lines from MCU to driver module (GND. 5V. PWM1. PWM2) isolation chip 5 V power supply (can share with MCU 5 V). Able to reverse the motor forward, two PWM input frequency up to 25kHZ two heat flow passing through an error signal output. Isolated chip 5V power supply (can be shared with the MCU 5V), can also use the on-board 5V supply the supply voltage 5.5V to 27V. Input voltage: 6V-27V Maximum current: 43A Input level: 3.3-5V Control method: PWM or level Duty cycle: 0-100 percent Input port: 1.RPWM: forward level or PWM signal input, active high 2.LPWM: Reverse level or PWM signal input, active high 3.R_EN: forward drive enable input, high-level enable, low level off 4.L_EN: Reverse drive enable input, high-level enable, low level off 5.R_IS: forward drive current alarm output 6.L_IS: Reverse drive current alarm output 7.VCC: and5 V power output, 5V power supply connection with the microcontroller 8.GND: signal common low end Colour:Photo Color Material: ABS Size: 5 x 5 x 3cm Package Contents: 1 x Motor Driver Module Only 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.