Indoor & Outdoor Accuracy Measure -- Built-in industrial grade sensors & Exterior 1.45m probe line detects subtle humidity and temperature changes in room and outdoor and updates readings every 8 seconds. Easy-to-Read Blackight Display -- Large LCD screen with huge digits and switchable backlight, you can read the current temperature and humidity at a glance even under dark. Alarm Clock Function -- The humidity meter also display exact date and 12H/24H time, and with hourly chime function and alarm clock function, press the "MODE" button for a while then press the "ADJ" button can adjust. Max & Min Record -- Press "MEMORY" digital thermometer will display the highest and the lowest temperature and humidity value in the past 24 hours. Degree ℃ & ℉ unit selectable, press the black button under kickstand to switch. Wide Application & More Mounting Options -- Suitable for baby's room, nursery, office, closet, incubator, greenhouse, garden, wine cellar, basement critter terrarium etc. With hanging hole and retractable stand, easy to mount it on wall or simply placed on the table.