Thermometer hygrometer barometer three-in-one meteorological station. Model No.: THB9392. Measurement range: 960~1060 hPa, -30~50 degrees Celsius, 0~100% Rh. Resolution: 1 hPa, 1 degree Celsius, 2% Rh. Accuracy: +/-5 hPa, 2 degrees Celsius, 5% Rh (40~70% Rh). Unit size: 13 x 4.1 cm. Weight: 0.13 kg. Note: Some customers may misunderstand the function of the white pointer, believing it indicates air pressure. The white pointer is a manual reference pointer used for comparison. Since air pressure changes are often small, the white pointer can be manually adjusted to align with the black pointer to observe future changes in air pressure. The white pointer does not move automatically. Important information: 1. Air pressure does not change significantly every day; noticeable changes occur with major weather shifts. 2. The weather forecast function is based solely on air pressure readings and may vary due to differences in altitude and terrain. It is not guaranteed to be accurate. 3. In high-altitude locations, barometric pressure readings will remain low, and the weather forecasting feature may not function properly. Measuring range: Pressure 960~1060 hPa, temperature -30~50 degrees Celsius, humidity 0~100% Rh. Customers in high-altitude or mountainous regions should confirm that their local atmospheric pressure falls within the device's measurement range. Readings below 960 hPa or above 1060 hPa may result in inaccurate or unmeasurable displays. Color: Silver Material: Metal Reference atmospheric pressure values at various elevations: - Elevation: 3680 m, air pressure 649 hPa (summer), 358 hPa (winter), 488 hPa (fall), 566 hPa (spring) - Hohhot: 1063 m, air pressure 889 hPa - Guiyang: 1071.2 m, air pressure 887 hPa - Bijie: 1510.6 m, pressure 844 hPa - Xingren: 1378 m, pressure 857 hPa - Kunming: 1891 m, pressure 808 hPa