What material does the throttle position sensor need?

Hall throttle position sensor in throttle position sensor is mainly composed of Hall element and magnet, which is installed on throttle shaft and can rotate around Hall element. When the throttle opening changes, the magnet rotates with it, thus changing the relative position with the Hall element, and the Hall IC is surrounded by the yoke.

Throttle position sensor, also known as throttle opening sensor or throttle switch, is a device for detecting engine state.