This product is designed to measure ozone (O₃) concentration. Ozone and oxygen undergo respective redox reactions at the working electrode and counter electrode, releasing electric charges to generate an electric current. The magnitude of the resulting current is proportional to the concentration of ozone.

Shanghai DST Sensor Co., Ltd. (DST Technology), established in 2012, is located in the Shibei High-tech Service Park—a national demonstration zone for independent innovation and a Shanghai big data industry base. Dedicated to becoming a global leader in ecological environment data services based on smart IoT, the company leverages sensing technology as its core and utilizes cutting-edge ICT—including IoT, cloud computing, big data, and AI—to build comprehensive, multi-layered environmental quality monitoring networks. Spanning environments from the outdoors and indoor living spaces to vehicle interiors, and covering the full spectrum from monitoring and purification to remediation, Diqin Tech enables environmental quality to be visualized, managed, controlled, and interactive, thereby fostering a synergy between smart technology and green living, and aligning health with business development.