... Can be upgraded with functions, eg, CO2 Monitor, Multi-parameter Monitor, Anesthesia depth Monitor, etc.CE marked, meet clinical safety ... lower than 25%Circle absorberSafety valve pressure limit: 6 KpaGood air tightness, high reliability, and minor respiration ... Can be upgraded with functions, eg, CO2 Monitor, Multi-parameter Monitor, Anesthesia depth Monitor, etc.CE marked, meet clinical safety ...