High Accuracy: The air thermometer allows a flow of air to pass through the ventilation holes and provides fast and accurate data over time, measuring a temperature range of - 10°C to 50°C (accuracy: ±1) and a humidity range of 10% to 99%.Can be used with humidifiers, dehumidifiers, heaters, thermostats, air conditioners, etc.Multifunctions: This room thermometer has clock function, alarm function, simple °C/°F switch and Min/Max temperature and humidity recording.ANSI 12 hour/24 hour display system optional.Comfort indicator: home thermometer with 3 types of IC?A smile with different temperature and humidity levels is also displayed.You don't need to spend a lot of effort to understand temperature and humidity.Make sure you stay informed of changes in your home?He is fast.Stylish and Compact: The wall-mounted thermometer has a tabletop and wall-mount design that makes it easy to install in any room.Small and light, saves space and is easy to carry.Ideal for a bedroom, an office, a warehouse?T. kitchen, etc.With 1 AAA battery included, you don't need to replace the battery more than half a year.Operation method push button function: [℃/F] push button to Switch ℃/℉;[Mode] change clock and alarm display mode / set current clock, alarm, 12 or 24 hour system, date;[adj] adjusts the item value set in the initial state, hold [Mode] for 2 seconds, press [adj] to adjust the minutes, press [Mode] continuously, set "Clock", "12 / 24", "Year", "Month (m)", "Day (d)".In the current clock mode (two dots between clock and minutes flash once per second), press [Mode] once to switch the display to alarm mode (two dots between clock and minutes do notnot flash), press [adj] to toggle the function switch?Alarm (Alarm)) / function?Time indication?, Then press [Mode] for two seconds, you can set the alarm time and start?Hour-by-hour instruction?Function, did the symbol appear?T. In alarm mode, if no operation, automatically return to current clock after one minute.At this point, press [adj] once to enter calendar mode and automatically return to the current clock after 3 seconds.Press [mem] to display the stored maximum (max) and minimum (min) temperature/humidity, hold (MEM) for more than 2 seconds to clear the max/min values.