[3-Level Air Comfort Indicator] Humidity meter with humidity level icon indicates DRY/COMFORT/WET air condition, allowing this humidity sensor to ensure you’re always aware of changes to your home. Note: the little triangle pointer will not display when the humidity is between 30% and 69% and the temperature is not between 64.4°F~78.8°F (18?-26?) [High Accuracy & Quickly Refresh] Digital indoor thermometer refreshes every 10 seconds to give you lastest reading. Inside thermometer has high accuracy of ±5%RH and ±1?. Wide measuring range that measures temp from 16°F~140°F(-9? ~ 60?) and humidity from 20% ~ 95% [High & Low Records] Accurate hygrometer digital thermometer displays high and low temperature & humidity, always get ready to the changes of the environment [Smart Design] Humidity temperature gauge with 3.7 inch large LCD display, easy to read from any angle and distance. While it's portable and lightweight to take it anywhere easily, °F/°C Selector; Powered by 2 x AAA battery [3 Mounting Options] Humidity meter has multiple mounting options: Tabletop Stand, Magnetic Back, Adherency Mount. With adhesive pads and built-in magnet, you can stick or place anywhere you like such as fridge, counter, living room, baby room, kitchen, basement, office, greenhouse, guitar room, office, garden and cellar ?Large Easy-to-Read Backlit Display?Temperature and humidity monitor with 3.5'' large HD LCD screen. A simple touch on turn on backlit. Clear and power-saving, reading more easily under weak backlit.