Showpin Indoor Digital Hygrometer Thermometer with Wall Clock,Alarm,LCD Display,Multifunctional Temperature Humidity Gauge for Home,Car,Office Multiple Functions - Work as hygrometer, thermometer. It can record the current indoor temperature, humidity. Provide a comfortable and healthy living condition for your family. Easy Operate - There are 3 buttons. Button MAX/MIN is design for you to check the record of High & Low temperatures & relative humidity. Easy to operate and no more confusion. Large LCD Screen and Big Digits  No Squinting Or Glasses Needed! Read It From Across The Room Easily. The size of the buttons also made for easy operate and visibility. With Back Stand and Magnetic Stick at Back Side  Convenient to place.You have 2 different choices for placement of the thermometer. Either stick it to the fridge door with its magnet, or use the pull out stand for table-top use. Battery(Included):You can enjoy the thermometer once recieve it without going out for buying the batterie,really time saved. If the display is not bright enough, please replace the new battery. Temperature range:-10C~+50C (+14F~+122F)(Indoor) Humidity range: 20%RH~90%RH &#034;Smiling Face&#034; appears@ indoor Temperature: 18 C ~ 25 C (64 F ~ 77 F)&amp;Indoor Humidity:40%~65%RH &#034;Depressed Face&#034; appears@ other indoor Temperature&amp;Indoor Humidity *Size: 3.2 * 2.8 * 0.8 inches Button function: [MAX/MIN] press to display memorized MAX and MIN values of temperature. [MODE] set current time and 12/24h display. [ADJ] adjust the value of what is under setting [/] change temperature unit between Celsius() and Fahrenheit(). In status of original, press the MODE button for 2 seconds to enter clock setting. Press ADJ button to select between 12h and 24h mode. Press MODE button one time step by step to enter setting point of hour, minute. Press ADJ button to adjust hour and minute value. After all setting points are finished, press MODE button one time to turn back to normal clock display. Press MODE button one time change to the alarm setting. Press the MODE button for 2 seconds to enter alarm setting. Press ADJ button one time step by step to enter setting point of hour/minute, press MODE button to finish the hour/minute value setting. During the setting and after no button pressing for 15 seconds, the meter returns to normal clock display, while the settled value is stored. Press [MAX/MIN] button to display the MAX/MIN values of temperature and the recorded time displayed simultaneously (flashing on LCD). 1 * Digital Thermo-hygrometer Clock 1 * 1.5V (AAA) Battery 1 * User Manual