Range:0 to 1990 ppm
Resolution: 10 ppm
Accuracy: +/- 2% Full Scale
Dimensions: 150 x 30 x 24 mm, Battery Life approx: 350 hours of continuous use, Battery Type: 4 x 1.5V, alkaline (included), Environment: 0 to 50°C / 32 to 122°F, RH: max 95%,Temperature Compensation from 5 to 50°C