DC motor driver input voltage range is DC 6.5V-27V, can be input DC 12V or 24V, rated output current of each port is 7A, total output power is 160W. STRONG DRIVE: the motor controller board adopts dual H bridge, can drive two DC motors at the same time. FORWARD and REVSERSELY ROTATE: the IN1, IN2/IN3, IN4 port can control forward or reverse motor rotation. PWM SPEED CONTROL: enable signal terminal () input PWM can regulate speed, PWM frequency range 0-10KHZ. UNDER VOLTAGE PROTECTION: the motor driver module is with under voltage protection to prevent instantaneous large current from damaging the module. 1. Power supply voltage 6.5V-27V, the power cannot be reversed or over 27V, or may burn the module, it is recommended connecting in series 15A fuse in the power input. 2. Dual motor interface, each rated output current 7A, current 50A, the motor interface cannot short-circuit, it is recommended connecting in series 15A fuse. 3. The enable signal and forward and reverse control signal control voltage 3-6.5V. 4. Enable signal terminal () input PWM can regulate speed, PWM frequency range 0-10KHZ, PWM minimum pulse width 10us. 5. Installation hole diameter: 3mm, noted to prevent short circuit when install the reverse side, you can add insulation pad or copper column to raise the circuit board Parameters matched: Motors with rated voltage 24V, identification of rated power 115W or , and motors with identification of rated current 7A can full work for a long time. size: 55 x 55 x 16mm Material:ABS colour:Red Package Contents: 1 x DC Motor Driver Board Only the above package content, other products are not included. Note: Light 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.