Usage Tips:Indoor thermometer and hygrometer can measure temperature range: -20C - and60C, temperature measurement accuracy: 1C Humidity measurement range: 10 percent RH -99 percent RH, Humidity Measurement Accuracy: 5 percent RH, Humidity Resolution: 1 percent RH observe the value. Displays current temperature and humidity in print, or you can read readings remotely to an accurate of current temperature and humidity changes. This portable hygrometer thermometer measures your room's humidity and temperature so you can a better of the surrounding air. Perfect for your home and family life. Indoor Home Thermometer With built-in magnetic suction and adhesive, it can be hung or placed on a table or shelf, or you can hang the thermometer and hygrometer through the holes, small and delicate and beautiful. Digital indoor thermometer hygrometer in living rooms, porches, bedrooms, wine cellars, basements, warehouses, offices, children's rooms and -in closets. Colour:White Material:ABS Package Contents: 4 x thermometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.