MSA ALTAIR® Pro portable single gas detector 10074132, Replacement Battery, ALTAIR Pro. Based on the industry-standard ALTAIR Single-Gas Detector—but with added features and functionality—ALTAIR Pro toxic gas and oxygen detectors combine reliable detection and LED/audible/flashing/vibrating alarms with clear, backlit LCD displays. Electrochemical sensors measure concentrations of toxic gas (chlorine dioxide, hydrogen cyanide and phosphine) or percent oxygen. Purpose-built for superior dust and water protection, excellent impact resistance and excellent RFI performance.

Features: Unit detects O2, ClO2, HCN and PH3. Gas concentration (chlorine dioxide, hydrogen cyanide and phosphine) or percent oxygen displayed on a large, clear, backlit LCD. Automatically records the last 50 alarm/test events while simultaneously recording peak gas readings or low O2 readings every three minutes in a periodic data log. User can read data or change alarm set points by connecting unit to MSA Link via built-in IR communication port. Adjustable alarm set points. No-miss quad alarm system includes bright flashing LEDs, piercing audible alarm, LCD notification, and an internal vibrating alarm. Rubberized armor housing and one-button operation for maximum durability and simplicity. Easy alarm check, bump check, fresh air zero, and calibration.