Double BTS7960 large current (43 A) H bridge driver . 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 5V 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 Package Included: 2 X BTS7960 43A High Power Motor Driver Module/ Smart Car Driver Module We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution.