The 4SMART-C01 sensor module is designed for 4-Series three-electrode electrochemical sensors, serving as a modular detection platform for real-time concentration detection of various types of toxic and hazardous gases in the environment. The module uses SemeaTech electrochemical sensor as the sensitive component (specific technical parameters of the sensor refer to the datasheet) and performs gas concentration detection through signal sampling, amplification, filtering, and conversion. It features built-in temperature compensation, linear correction, and other functions, ensuring excellent stability. The module supports UART signal output modes, allowing direct output of digital and analog voltage signals that represent gas concentration data. The user-friendly design simplifies operation and reduces the users' development cycle. It also includes an automatic shorting PIN function for zero-bias power failure, enabling stable operation within minutes of power-on for unbiased sensors. For biased sensors, it is recommended to power on for over 24 hours before use.