ST8400HE JSeries Rotation Rate Sensors adpts the principle of magneto-electric conversion, and converses the physical quantity in the mechanical rotation into sine wave signal which is sent out. The processing of the ports uses advanced technique such as seal welding. Therefore, this product is able to provide reliable and stable performance while it enjoys a long life span with no worn. It is commonly used in measuring the rotation rate, rotation cycle and speed, and it is applied in the field of rotation test for various kinds of auto engines and mechanical equipment.