This parking brake shutdown sensor is an important electronic control component for heavy trucks. It detects the working state of the parking brake and sends feedback signals to the vehicle ECU to realize related power-off protection and safety reminder functions. Built with high-precision sensing chip and sealed protective housing, it resists vibration, dust and water splashes under complex road conditions. Stable signal output ensures normal operation of vehicle safety interlock system. Every sensor passes signal and durability tests before delivery. It solves faults such as signal abnormality and false alarm, serving as a key electronic replacement part for truck chassis maintenance.