ALTAIR Pro: Oxygen O2 (Low: 19.5%, High: 23.0%), Black

Single-Gas Detector, Replaceable Battery Yes, Product Type Single-Gas Detector, Display Screen Type LCD, Includes Probe No, Housing Color Black, Gas Detected Oxygen, Communication Protocol Not Applicable, Series ALTAIR Pro, Battery Size 2CR, Operating Humidity – Maximum 95 Percent, Status Indicator LED, Resistance Properties Dust Resistant, Impact Resistant, Water Resistant, Operating Humidity – Minimum 10 Percent, Temperature Code T4, Alarm Setting High 28 Percent vol, Low 19.5 Percent vol