... .3, Press “MODE" button for three seconds into the clock display mode, press the MODE button four times, minutes, hours, 24/ ... .4, Press “MODE” button for one second to enter the clock display mode, then press “ADJ” button, you can choose to close ... Celsius or Fahrenheit display modes.7, Press “MAX / MIN” button to see the maximum or minimum temperature display. Digital LCD thermometer with hygrometer ...