The ESM-27 system collects on-site meteorological data, gas concentrations, and video data, wirelessly transmitting the data in real time. By combining this information with the system's built-in hazardous chemicals database and using simulation software, it calculates and monitors the real-time gas dispersion impact area. The system also enables emergency resource querying, deployment, fire suppressant calculation, and incident status simulation, providing decision support for commanders during hazardous chemical accident rescue operations.