This Thermometer & Humidity Meter displays the temperature in Fahrenheit and the Humidity in the air. The white front panel has a clear LCD display with large bold numbers, so it is easy to read even from a distance. The built in vivid smiley face emoticon helps you understand your humidity in an instant and better care for your pet's and family's health. When the emoticon is 🙂 the humidity is between 40%-70% and comfortable. The 🙁emoticon let's you know that the humidity is below 40% and can make the air too dry causing your pet's & family's skin and nose to become dry & itchy or above 70% which can be unhealthy as well because there's too much mositure in the air. You & your pets will be more comfortable around 50% 🙂 The meter comes with a long life battery included that has a longer service life than ordinary button batteries. There are a variety of installation options for your meter. With double sided tape and hanging holes on the back, you can paste or place your digital home thermometer anywhere you like, such as refrigerator, counter, pet/baby room, basement etc. Get 2 Pack & $AVE!