The hydrogen sulfide (H₂S) leakage sensor is a critical safety component installed within solid-state battery packs to provide early warning and monitoring of thermal runaway. This module utilizes a fuel-cell-type electrochemical H₂S sensor combined with a high-performance microprocessor and specialized intelligent algorithms, ensuring excellent responsiveness, stability, and high precision. Featuring a highly integrated and compact design for easy installation, the module is intelligent and user-friendly, allowing for the flexible configuration of alarm thresholds at desired locations.