Oasis Digital Thermometer and Hygrometer OH-2+ Oasis Digital Thermometer and Hygrometer with humidity calibration (3v 2032 battery included - annual replacement needed) Guaranteed for 5 full years Super-slim profile design with secure Velcro mount fits anywhere Advanced humidity sensor maintains exceptional accuracy for years Records high/low temperatures Measures temperature in C or F On/off switch Measures: 4" x 1.25" x .375" HumidityMeasuring Range: 20% to 90% RH (Relative Humidity)Resolution: 1%Updating time: 10 seconds TemperatureMeasuring range: 0-50 degrees C or 32-122 degrees F NOTE: Calibration allows the user to adjust the hygrometer +/- 5 RH points if any changes are needed. We recommend using the Boveda One-Step calibration kit (75% RH) (available at www.oasishumdifiers.com) to deter-mine whether the hygrometer is accurate. Simply open the plastic bag holding the calibration kit and insert the OH-2+. Leave it in the bag overnight and see if the reading on the hygrometer is 75% the next day. In most conditions, the OH-2+ will vary less than 3 RH % points. If the reading is not spot on 75%, the hygrometer can be easily adjusted, by following the directions on the enclosed instruction sheet packed in the box.
