1.Measurement Range:0-9999PPM
2.Resolution Ratio of CO2: 1ppm
3.Datalogger:999groups
4.Accuracy: ±10% of readings of ±40PPM
5.Working temperature range:-10~+60(-14~140℉)
6.Working humidity range:0~99%
7.Temperature accuracy:±1℃
8.Temperature resolution:0.01℃
9.Humidity measurement range:0~100%
10.Humidity accuracy:±2%
11.Humidity resolution:0.01%
12.Battery can last 18 hours
13.Battery:Li-battery,rechargeable,2600mAh