Specification Name:3 IN 1 Weather Station Thermomete Material: Alloy aluminum,PMMA (Polymethylmethacrylate) Measurement Range: -30~50?; 0~100%RH; 970~1050hPa Resolution: 1hPa, 1?, 2%RH Accuracy: ±2?,±5%RH(30~80%RH),±5hPa(970~1040hPa) Diameter: 13cm/5.12" Thickness: 4.1cm/1.61" Application: This product is used to measure the changes of the parameters of the temperature, humidty, atmospheric pressure. According to the variation tendency of the environment's temperature, humidty and air pressure, it can predict the weather accurately. Thus, it can be a multifunctional household weather forecasting instrument. Features: a.With barometer, thermometer and hygrometer, 3 in 1 multifunction, economical and practical b.Standard measuring range, predict the weather more accurately c.Lightweight and easy to install, suitable for hanging or placing on a surface d.Simple and elegant design make you more comfortable when using it Package Included: 1 x Thermometer Hygrometer Barometer(3 IN 1 Weather Station Thermomete)