Digital Instant Read Thermometer Hygrometer, TIAMAT Indoor Temperature Humidity Meter Detector, Electronic Thermometer for Kitchen, Indoor Garden, Cellar, Fridge, Closet - Black Temperature and Humidity Monitor: Measures temperature and humidity from -45 to 158F (-50 to 70C) and 10-99% RH with approximate numbers. (The temperature display resolution is 0.1c /0.1f and the humidity display resolution is 1%) / Conversion: Indoor thermometer displays temperature in Fahrenheit or Celsius. You can change the way of temperature display as you like just by simply pressing the conversion button button of "/" Caring for Health: Measures conditions every 10 seconds to quickly identify changes in temperature and humidity. The up-to-date display is great for caring family's living conditions and health by preventing colds, tracheitisarthritis and headache Wide Range of Application: Diameter of this hygrometer thermometer is only 1.9inch. The space-saving design enables it to be used in various environments such as office, babyroom, greenhouse and so on. Power Saving and Durable: Powered by a LR44/AG13 energy-saving button battery(easy to replace), displays temperature and humidity by a LCD screen. It's more durable than other AAA battery-powered thermometers