Features: Support forward and reverse operate of motors, flexibly control the direction of motor operate, and meet the needs of different mechanical applications. The motor speed can be adjusted as needed to achieve precise control, suitable for various occasions such as automatic doors, robots, and other equipment. Built in delay function, which can set the motor running time and shutdown interval, automatically cycle operate, and improve work efficiency. Equipped with a locked rotor protections function, it automatically cut off the power supply when the motor is abnormal or the load is too high, avoiding damage to the motor and controller and ensuring safe use. Supports 12V and 24V power supply, suitable for various motors, widely used in homes automation, industrial equipment, toy and other fields. Specifications: Component: Plastic Size:about 79x43x30mm/3.11x1.69x1.18inch Power supply ranges:DC12-30V universals Drive mode:H-bridge Driving ability:maximums effective value of 10Amp Drive frequency:1KHz Control modes:23 Reverse input protections:Yes Cycle work times:1-9999 times Product usage environment:-10C~60C（none condensation) Package Includes: 1pc Stepper Motor Driver Controller note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.