Name: thermometer hygrometer barometer three-in-one meteorological station. Model No.: THB9392. Measuring range: 960~1060hPa, -30~50 degrees Celsius, 0~100%Rh. Resolution: 1hPa, 1 degree Celsius, 2%Rh. Accuracy: +/-5hPa, +/-2 degrees Celsius, +/-5%Rh(40~70%Rh) Unit size: about 13 x 41CM. Weight: about 013Kg Reminder: many customers do not understand, and mistakenly believe that the white pointer is the degree of pressure. In fact, the white pointer is just a contrast pointer, because the pressure change is very small, for example, the white pointer is manually adjusted to the same position as the black color, so you can see whether the pressure is high or low tomorrow. The white pointer is manual. It does not change by itself. Important reminder 1 The pressure does not change every day, and the pressure changes when the weather changes greatly. 2The weather forecast function is only based on the pressure, and it is different from the actual altitude and terrain, not necessarily accurate. 3If the location is high, the barometric pressure will always be low and the weather forecast function will not work. Measurement range: pressure 960 ~ 1060hPa (hPa), temperature -30 ~ 50, humidity 0 ~ 100% Rh; special reminder to friends in highland areas or mountains, be sure to confirm your atmospheric pressure within our barometer range. The atmospheric pressure below 960hpa or higher than 1060hpa will be displayed on the far left or right and cannot measure the situation. Color: silver Material: metal Common plateau pressure reference: Lhasa altitude: 3680m, pressure 649hPa (summer), 358hpa (winter), 488hpa (autumn), 566hpa (spring) Hohhot: 1063m, pressure 889hpa Guiyang: 10712m, pressure 887hpa Bijie: 15106m, pressure 844hpa Xingren: 1378m, pressure 857hpa Kunming: 1891m, pressure 808h