Operating Range -18 °C - 55 °C / 0 °F - 130 °F 0% - 100% Humidity 260 - 1260 mbar / 7.7 - 37.2 inHg IPX4-certified Accuracy ± 0.3 °C / ± 0.54 °F ± 3% Humidity ± 1 mbar / 0.03 inHg