1．This machine adopts double-head multiplex sensor detecting and has improved the detecting efficiency and detecting accuracy;
2．It can calculate the qualified products, rejects and total amount;
3．It can detect the thick materials and super thin materials;
4．This machine is equipped with automatic adjusting apparatus which can correct the conveyor.
5．The apparatus of fully computer-control automatic switch can prevent pushing the start button frequently;
6．With environment-saving principle, it has automatic power-saving function;
7．With environment interference indicator and broken-needle indicator;
8．Automatic alarm of broken needle, and automatic return, the distance of return can be set at will;
9．This machine features the good immunity, good reliability, and high sensitivity.