The GE E-CAIO series AGM gas module is a small and compact module. All models can identify and read O2, N20, and CO2. The E-COV and E-CAIOV also have Spirometry. The E-CAIO and E-CAIOV can read and identify Agent Gas. The module is double wide making it very easy to implement in many situations. It works with GE module rack and internal module rack on GE Monitors with compatible software. OEM requires a normal PM and checkout each year. Every four years requires replacement of a CO2 Scrubber which is sold separately from the standard PM kit. The most common issues with these units bench or pump failures. Most errors displayed on screen are related to pneumatic assembly usually causing occlusion for flow rate issue.