The ZI01 photoionization module is a high-performance PID series module. It employs a photoionization gas sensor (PID) and a high-performance microprocessor. It uses ultraviolet light generated by an ionization lamp to bombard the target gas. Once the target gas absorbs sufficient ultraviolet light energy, it is ionized. The module detects the concentration of the target gas by detecting the minute current generated after ionization. The module can accurately measure the concentration of various volatile organic compounds (VOCs) present in the environment. It features both UART output and analog voltage output, facilitating user operation and debugging, and significantly shortening the user's design and development cycle. It perfectly integrates the PID sensor with the circuitry, meeting users' needs for on-site detection.