Description<br>Good use on the desk or bedroom can see clearly in the dark whenpress the light button.<br>Projection time function (pressing button)<br>Measuring temperature range: -9.9~+60u2103<br>Measuring humidity range: 20%~90%<br>Resolution: 1u2103<br>Display:Max/Min temperature and humidity<br>Calendar Display: 2001 -2099 year<br>Power Supply: 2x AAA battery (not included) / DC 4.5V input (cablenot included)<br>Color: Black+ Grey<br>How to use:<br>1. Setting the time<br>The hour digits are blinking and can be set by pressing UP or Downfor setting hours<br>Use the same way to set minute.<br>2. Setting the alarm<br>Press the mode to view the alarm time.<br>Press mode hold for 3 seconds to enter the alarm setting mode<br>The hour digits are blinking and can be set by pressing UP or Downfor setting hours.<br>Use the same way to set minute.<br>3. Setting the calendar<br>Press the mode to view the calendar.<br>Press mode hold for 3 seconds to enter the calendar settingmode.<br>The year digits are blinking and can be set by pressing UP or Downfor setting years.<br>Use the same way to set month and the day.<br>4. Alarm on/off<br>Press up to turn alarm on or off<br>5. Max/min<br>Press the max/min to view max temperature and humidity record.<br>Press the max/min again to view min temperature and humidityrecord<br>