name: Thermometer Hygrometer Barometer Three-in-One Meteorological Station model no.: THB9392 measurement range: 960~1060 hPa, -30~50 degree centigrade, 0~100% Rh resolution: 1 hPa, 1 degree centigrade, 2% Rh accuracy: +/-5 hPa, 2 degree centigrade, 5% Rh (40~70% Rh) unit size: approx 13 x 41 cm weight: approx 0.13 kg note: many customers do not understand and mistakenly believe that the white pointer indicates pressure. the white pointer is a manual reference pointer used for comparison. because pressure changes are small, you can manually adjust the white pointer to align with the black pointer to observe changes in pressure over time. the white pointer does not move automatically. important reminders: 1. atmospheric pressure does not change significantly every day; noticeable changes occur with major weather shifts. 2. the weather forecast function is based solely on barometric pressure and may vary due to altitude and terrain; results are not guaranteed to match official forecasts. 3. at high elevations, barometric pressure readings will be lower, and the weather prediction function may not operate accurately. measuring range: pressure 960~1060 hPa, temperature -30~50C, humidity 0~100% Rh note for high-altitude users: confirm that your local atmospheric pressure falls within the device's range. pressures below 960 hPa or above 1060 hPa may result in inaccurate readings or inability to measure. color: silver material: metal reference pressure values at various locations: - lhasa: elevation 3680 m, pressure 649 hPa (summer), 358 hPa (winter), 488 hPa (fall), 566 hPa (spring) - hohhot: elevation 1063 m, pressure 889 hPa - guiyang: elevation 1071 m, pressure 887 hPa - bijie: elevation 1510 m, pressure 844 hPa - xingren: elevation 1378 m, pressure 857 hPa - kunming: elevation 1891 m, pressure 808 hPa