The MAXO2 is a fast-responding, oxygen-specific, galvanic sensor that achieves 90 percent of final value in approximately 15 seconds at room temperature. It includes an extra-life oygen sensor of approximately 900,000 O2 percent hours; an external probe with 10 feet of extendable cable and diverter fitting for standard 15mm "T" adapter; and large, easy-to-read, 3.5 digit LCD display for readings in the 0 to 100 percent range. From Maxtec, the MAXO2 operates on two AA alkaline batteries for approximately 3,000 hours of performance in typical usage. It also include adjustable high-level and low-level alarming capability with flashing LED and audible indication of alarm conditions.