Feature: Plastic environmental , noteasy to damage. Physical sensing principle, no battery, easyto use. Dialdisplay, easyto observe temperature and humidity changes. A thermometer measures both temperature and humidity. Temperature : 60-120℉ /16-49℃. Humidity : 0-100%. Color printing, clear scale. Small and convenient, portable. There is double-sided tape on the back of the thermometer, which can be pasted directly on the wall for easyinstallation. Specification: : Plastic Size: Approx. 74x22mm/2.91x0.87in Type: 1Pc/2Pcs Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: Package 1: 1x Thermometer Hygrometer Package 2: 2x Thermometer Hygrometer