Friendly Reminders: (1)Motor Wiring: Connect the red lead to the positive electrode and the black lead to the negative pole. Reversing these connections will make the motor rotate in the opposite direction. (2)Overload: Stay within the specified load range whenever possible. Avoid blocking the motor or running it near stall conditions, as this can cause the motor to burn out. (3)With self-locking, the output shaft can't rotation when switch off, that is self-locking. (11) Gearbox output shaft and motor shaft are come to be a rectangle, it's widely used in various of occasions that require special install size.