This module uses a 10M high-speed optocoupler to isolate the input signal, effectively preventing the interference signal of board from interfering with the control board, making the system more stable and reliable. This module can be used to drive general DC motors with a maximum current of up to 100A . It is unmatched by general integrated motor drives. Therefore, it is very suitable for robot competitions, chariot competitions, and Freescale competitions. Of course, this motor drive module is also very suitable for novices who are learning motor control, because its control is very simple, see the following description for details Features of drive module: 1. The basic components of module body are patches, high integration, well-designed board layout, very beautiful, small size, onboard two high-power DC motor drive, the size of module is only 80mmx70mm; 2. The large heat sink can effectively dissipate heat for module when the current is large, and maintain the stable performance of the module; 3. When driving the motor, the maximum rated current of the module can reach 100A and the on-resistance is only 0.0015 ohm; 4. The switching frequency is high, up to 60KHZ, which effectively avoids the unpleasantness caused by the low frequency of the commissioning motor; 5. The control interface is very simple: When A1.A2=0.0, it is brake; When A1.A2=1.0, it is forward rotation; A1.A2=0.1 is reverse; PA is PWM wave input (motor speed adjustment); G is the common ground pin with the control board (B road is the same control); 6. Both 3.3V and 5V microcontrollers can control this module, and only one motor power supply (12V~48V) Due to different product batches, the appearance may be different, which does not affect use. Material: PC+metal colour: As shown Package Contents: 1 * Motor Drive Module Board Only the above package content, other products are not included.Note: Light reflection 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.