This series of products is designed to facilitate the calculation of output, length, quantity, etc. of various mechanical equipment and production occasions. It is easy to install, simple to operate, plug and play, a variety of meter counters and sensor matching combinations, and can be equipped with a buzzer to alarm. Single-stage counting meter, double-stage counting meter, plus-minus counting meter, total batch counting meter. It can be used separately or in combination, or customized according to needs. The plastic box and iron box with box body are installed and used by professional and technical personnel. Please consult customer service when ordering, and indicate the required functions and sensors.