Double BTS7960 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 Double BTS7960 H-bridge driver circuit, with a strong drive and , effectively isolating the microcontroller and motor driver High-current 43A 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 size:5x5x3cm Material:ABS colour:As shown Package Contents: 2 x Motor Driver Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.