Q2 Portable O2 / Co2 Analyzer For Map Testing, Each

Details:

Input voltage : 100-240v, 50-60hz battery operation: included backup power: four "aa" alkaline batteries (not included) power supply: four "aa" nimh rechargeable batteries; auto shut-off after 45 minutes idle. 100-240V (50-60hz) charger included, with us or international interchangeable plug adapter carbon dioxide sensor type : solid-state infrared accuracy - carbon dioxide : ± 1% of reading, or ± 0.2% Co2 (whichever is greater) co2 minimum detection limit : 0.1% (0-100% Range) or 0.01% (0-20% Range)