20% Carbon Dioxide Sampling Data Logger

The 20% Carbon Dioxide Sampling Data Logger is designed to measure carbon dioxide levels over time in enclosed environments, used primarily in life sciences, indoor agriculture, or safety applications.  Features Large LCD Display for Instant CO2 Measurements Audible and Visual Alarm Indicators Data Logging with micro SD Card (16GB included), real-time data graphing Li-ion rechargeable batteries lasting 30+ hours (3 included) Applications Fermentation Monitoring and Validation Biological Incubators Agriculture Leak Detection Scientific Research Specifications Measures: Carbon Dioxide -  0-20% CO2 Relative Humidity: 0~95%, ±3% @25°C (20~80%RH), others ±5% Temperature: 0~50°C,±1℃ Barometer: 50~110kPa, ±0.4kPa Accuracy: ±70 ppm +/- 5% of reading @ STP Operating Conditions: 0~50°C(32~122°F), 0~95%RH, non-condensing Display Resolution: O2: 1ppm, 10ppm, or 100ppm Storage Temperature: -20~60°C(-4~140°F) Alarm Volume: 80db ±5% @10cm Power: (3) Rechargeable Li-ion 18650