The SS21CH is an electrochemical dual-gas sensor capable of simultaneously detecting carbon monoxide (CO) and hydrogen sulfide (H₂S) using a single sensor module. It measures CO in the 0–500 ppm range and H₂S in the 0–200 ppm range, with a fast response time of less than 30 seconds. This sensor is ideal for use in portable multi-gas detectors, industrial safety systems, residential CO alarms, and environments such as sewage and wastewater treatment plants. It features low cross-sensitivity between CO and H₂S, high long-term stability, and a lifespan exceeding 24 months—making it suitable for any field requiring accurate monitoring in mixed-gas environments.
