1. Rich quantity for indoor or outdoor use: You will receive 4 household indoor thermometers, using 1.57 inch LCD display and large bold digital Fahrenheit temperature display; This hygrometer displays the temperature in Fahrenheit. It is available for you to use in large quantities. It can also be placed at home or outdoors 2. Good measurement accuracy: the temperature measurement range of our temperature sensor is from - 58 F to - 158 F; The humidity measurement range is 10% to 99% RH (once every 10 seconds); Humidity measurement accuracy: plus or minus 5% relative humidity; High accuracy, fast refresh speed, practical and convenient household thermometer 3. Easy to read: The room thermometer is equipped with a built-in emoticon, which is also an indicator of air comfort; When the emoticon is a smiling face, it represents the most appropriate temperature and humidity, and there is no complex function button; The beautiful white front panel has a clear LCD display with bold figures, so you can easily read the digital thermometer even from a distance 4. Long battery life: The built-in CR2032 battery (included) is used for indoor thermometer and hygrometer. The service life of the humidity sensor is longer than that of the ordinary LR44 button battery, ensuring that your battery life is longer. The humidity monitor also provides you with a good use experience 5. Multiple occasions: hygrometer, bracket type, wall type and adhesive type have multiple installation options; With double-sided tape and hanging hole on the back, you can paste or place these digital home thermometers in any place you like, such as refrigerator, counter, living room, baby room, kitchen, basement, office, greenhouse, guitar room, office and garden