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Barometric pressure range from 500 to 1030 millibars (mbar) with a resolution of 1 mbar. Accuracy is ±4 mbar. Barometric pressure trend shows in bar-chart format the current and past 1-, 3-, 6-, 12-, and 24-hour readings. Switching permits viewing in milibars (mbar), inches of mercury (inHg), or hectopascals (hPa). Altitude compensation is –100 to 2500 meters.
Temperature range is 32 to 131ºF and 0 to 55ºC. Resolution is 0.1° and accuracy is ±0.4°C. Relative humidity range is 5 to 95%. Resolution is 1% RH and accuracy is ±3% RH between 5 to 75%, otherwise ±5% RH.