0-25% Oxygen O2 Sampling Data Logger

The 25% Oxygen Sampling Data Logger is designed to measure oxygen levels over time in enclosed environments, used primarily in life sciences, incubation, and scientific and medical applications.  Features Large LCD Display for Instant O2 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 Agricultural O2 uptake analysis O2 leak detection Fire Suppression System Testing Scientific Research Specifications Measures: Oxygen -  0-25% O2 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