Color: White Thermometer Hygrometer Inside Digital High Precision Specifications Temperature measurement range: -10 ~ + 50 (+ 14 ~ + 122 ) Accuracy of temperature measurement: & moremn; 1 (1.8 ) Temperature solution: (& plusmn; 0.1 (0.2 ) Humidity measurement range: (10% ~ 99% RH) Measurement solution humidity: 1% Use battery: AAA1.5V Operation method 1. Button function: [ / F] button to toggle / ; [MODE] change display mode of clock and alarm / set current clock, alarm clock, 12 or 24 hour system, date; [ADJ] adjust the value of the dropout finished 2. In the initial state, press and hold [MODE] for 2 seconds, press [ADJ] to set the number of minutes, and press [MODE] continuously to set "clock" , "12/24", "year", "month (M)", "Day (D)" 3. In the current clock mode (the colon between the clock and the minutes flash once per second ), press [MODE] once to switch the display to alarm mode (the colon between the clock and the half nutes are not flashing), press [ADJ] You can switch the function switch & laquo; Alarm (Alarm)) / Function & laquo; Timekeeping & raquo; (), then press [MODE] for two seconds, you can set the alarm time and start the & laquo; Time indication by hour & raquo; function, () The symbol appears. 4. In alarm mode, if there is no operation, it will automatically come back to you. the current clock after one minute. & Agrave; At this time, press [ADJ] once to switch to & agrave; calendar display and return automatically & agrave; the current clock after 3 seconds. 5. Press [MEM] to display the maximum (MAX) and minimum (MIN) of the temperature / humidity. memorized, hold (MEM) for more than 2 seconds to clear the maximum / minimum value