The SS2168 is an electrochemical sensor designed to accurately measure chlorine (Cl₂) concentrations in the 0–20 ppm range. It offers an output signal of 700 ± 250 nA/ppm, a fast T90 response time of less than 30 seconds, and high sensitivity with a resolution below 0.1 ppm. With minimal cross-sensitivity to gases such as CO, H₂, H₂S, SO₂, and NO, it is ideal for industrial safety applications and air quality monitoring. It operates reliably in a wide temperature range of -20℃ to +50℃ and provides a long service life of over 24 months in ambient air. Easily integrated into portable detectors and fixed gas monitoring systems.