The MiniOX IA Oxygen Analyzer is the ideal choice for spot-checking or troubleshooting home oxygen concentrators. Designed to attach to any model of oxygen concentrator with CGA standard connection, the MiniOX IA Oxygen Analyzer with internal oxygen sensor is powered by one 9-volt battery for up to 1400 hours of use. Each unit is shipped with sensor, male universal nipple adapter, oxygen tubing and battery.