、This practical speed sensor is specially manufactured for DH220-5 and DH300-7 excavators. It stably detects real-time engine rotation speed and transmits accurate signals to the main control system. It helps maintain stable engine speed and ensures smooth operation of the whole machine. Featuring solid internal structure and excellent sealing performance, it can resist vibration and temperature changes in complex working scenes. In line with OEM quality standards, it has high compatibility, fast signal transmission and long service life for daily equipment maintenance.