This product measures temperature, humidity, and atmospheric pressure to help predict weather changes. It functions as a multifunctional household weather forecasting instrument. Features a built-in barometer, thermometer, and hygrometer in a 3-in-1 design that is economical and practical. Offers standard measuring range for accurate weather prediction. Lightweight and easy to install, suitable for hanging or placing on a surface. Simple and elegant design for comfortable use. Measurement Range: -30~50C; 0~100%RH; 970~1050hPa Resolution: 1hPa, 1C, 2%RH Accuracy: 5C (within 25C), 5%RH (30~80%RH), 5hPa (970~1040hPa) Diameter: 13cm (5.12") Thickness: 4.1cm (1.61") Quantity: 1 Piece Note: Please allow 1-3mm error due to manual measurement. Check product dimensions before purchasing. Due to differences in monitor displays, the image may not reflect the actual color of the item. Package Contents: 1 x Thermometer Hygrometer Barometer