1、Countdown Mode: Easily set countdown time in minutes and seconds with touch buttons, start or pause with a single press, and enjoy an accurate timer that beeps 15 times upon completion. 2、Temperature and Humidity Display: Switch between Celsius and Fahrenheit, measure temperature from +14℉ to +122℉ (‑10℃ to +50℃), and measure relative humidity from 20% to 95%RH for a comprehensive environmental check. 3、Air Comfort Indicator: Quickly assess air conditions with a humidity bar, indicating dry, comfortable, humid air for adjusting humidifiers or dehumidifiers to create a health living environment and prevent illnesses effectively. 4、Touch LCD Display: Featuring bold, easy to read numbers and a stylish design, this compact temperature and humidity meter comes with a 10 second backlight function for convenient viewing from any angle or distance. 5、Long Lasting Battery Life: Powered by 2 AAA batteries (not included), each lasting 8 to 12 months, this indoor humidity meter also displays the time for added convenience.