Great Precision & Fast Response The temperature and humidity sensors check the environment approximately every 10 seconds and then automatically update the screen display to get the most accurate readings., Large measuring range that measures the temperature: -20 C ~ 70 C (-4 F ~ 158 F), temperature accuracy: 1 C. Measures the humidity: 10% RH ~ 99% RH, humidity accuracy: 5%.Large display with large digits Clearer to read Light and black control panel with LCD screen for clear display of the numerical displays. This means that you can clearly read the temperature and humidity even from a great distance. LCD screen: 2.6 in. (Product dimensions: 8 x 5 x 1.9 cm.Super portable & 3 mounting method You can either put this room thermometer on the fold-out stand or mount it on the wall through the hanging hole on the back. The integrated magnet allows the inside hygrometer to be attached to a metal surface. Use of a triple A battery (AAA) (not included).Easy to use & intelligent comfort display The simple one-button design for the UPZSI thermometer makes the operation more elegant and sophisticated. The temperature displays C and F can be switched at the push of a button. 3 symbols show the current atmospheric conditions in real time. One smiley stands for comfort, one raindrop stands for general comfort and 3 raindrops mean unpleasant.With the practical room thermometer you can keep an eye on the temperature and humidity through the clear display and you are now in control of the room climate in the rooms in which you spend most of the time, e.g. living room, bedroom and children& 39;s room. The palm-sized thermometer-hygrometer can be a wonderful addition to the house, office, kitchen, children& 39;s room, wine cellar and greenhouse.