Features: Accurate Measurement - Built-in industrial-grade sensors detect subtle humidity and temperature changes both indoors and outdoors, updating readings every 8 seconds. Easy-to-Read Backlit Display - Large LCD screen with large digits and switchable backlight allows you to read the current temperature and humidity at a glance, even in the dark. It can automatically turn off the backlight after 5 seconds to save energy. Alarm Function - The humidity meter also displays the exact date and 12/24-hour time. With the hourly chime and alarm functions, press and hold the "MODE" button, then press the "ADJ" button to set the time. Max/Min Record - Pressing the "MAX/MIN" button displays the highest and lowest temperature and humidity readings from the last 24 hours. Selectable temperature (°C and °F) for the unit; press the °C/°F button on the back of the switch. Wide application and more mounting options – suitable for baby rooms, nurseries, offices, closets, incubators, greenhouses,