An external plug and play sidestream etco2(end tidal co2) sensor. It does not occupy any host space and connects to host just with one eight-pin plug. Capnoxi features cutting-edge technology for measurement of instantaneous co2 concentration, respiration rate, end-tidal co2 concentration, inspired co2 concentration, inspiration time and expiration time. It is generally used in patient monitor and anesthetic machine. With a sampling rate low to 50 ml/min, it is ideal for use on adult, pediatric and infant patients; patients undergoing procedural sedation; and short- term monitoring of intubated patients.