Specifications

This instruments measures air temperature and relative humidity.

This instruments measures air temperature and relative humidity. The internal temperature sensor is  mounted on the circuit board inside enclosure of the datalogger case. Typically this sensor is left inside the case and measures ambient air temperature.  Measurement range: Temperature: -40° to 123.8°C, RH: 0% to 100% RH
AccuracyTemperature: better than +/- 0.5°C from 0° to 40°C see Plot A
RH: ± 2% from 10% to 90% over the range of 0° to 60°C, see Plot B; ± 4% from 0% to 10%  and 90% to 100%
Resolution: Temperature: 0.01°C, RH: 0.03%
Sample Rate: 1 minute to 24 hours, user selectable
Drift: Temperature: 0.1°C/year, RH: <1% per year typical
Response time in airflow of 1 m/s (2.2 mph)
Temperature: 1 minute (max), RH: 1 minute(max)
Time accuracy: Approximately ± 1 minute per month Typical
Operating range: Logging: -30° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Battery life: 1 year typical use
Memory: 64K bytes