MSA ALTAIR Pro Oxygen (O2) Gas Monitor with a rugged design is easy to use and features replaceable sensors as well as distinctive alarm system. Monitor with built-in IR communication consists of easily replaceable battery and backlit LCD displays. Monitor is fast responding and features clear alarm functions to alert the wearer. Durability and simplicity is obtained by the rubberized armor housing as well as one-button operation of the Monitor. Monitor measures concentrations of carbon monoxide with the help of highly accurate electrochemical sensors. Monitor with active data-logging function can automatically record the last 50 alarm or test events. The connection of the unit to an MSA infrared adapter using the built-in IR communication port lets you easily access or change the data/alarm set points. Alarm set points are offered for low level at 19.5% and high level at 23%. The alarm in the Monitor is indicated by two bright flashing LEDs, a piercing audible alarm, a flashing notification on the LCD and an internal vibrating alarm. It offers good RFI performance and impact resistance along with protection from dust as well as water. Monitor is ideal for gas detection, construction, nuclear, chemical, indoor air quality, electric utility, firefighting, oil, gas, water/waste water and general industry applications.