The ZE21-CS electrochemical battery leak detection module is a specialized, miniaturized unit. It employs electrochemical principles to detect gases released by the evaporation of battery electrolytes, as well as those generated during battery combustion, offering excellent gas selectivity and stability. The module features an integrated temperature sensor for temperature compensation and provides serial data output with high acquisition precision. The ZE21-CS is a purpose-built gas detection module that combines mature electrochemical sensing technology with sophisticated circuit design.