Working principle & Introduction:5-digit Mechanical Reset Counter mainly divided into two categories of rotation type and pulling type, suitable for controlling the rotation or operation of machines or instruments. Pushing down the left button , the required figures can be input into the counter by pressing the rest 5 buttons in sequence, loosen the left button the counter will indicate the selected figures. With reset, when the digit display of the counter reach to 00000, the counter send a signal to control the machine to stop working.