We have improved the User Instruction which is very easy to read and operate. Also we have replaced a well dispatched package which seems much more delicate./FUNCTION: humidity, Celsius/Fahrenheit display temperature, 12/24H switchable time and clock alarm. RANGE AND ACCURACY: measures temperature range -10~50 Celsius, accuracy +/-1 Celsius/1.8 Fahrenheit; measures humidity range 10%~99%RH, accuracy 1%RH. POWER SUPPLY AND WAY TO PLACE: it is powered by 1*AAA battery(Without); the clock can be hung and set on desktop or countertop. EASY TO OPERATE: just among 'MOOD', 'ADJ', 'MEMORY' button to switch and adjust the LCD thermometer and hygrometer. Clear and easy to operate. SUIT APPLICATIONS: with humidity and temperature monitoring, the digital room thermometer suits for using , office, indoor living room, perfect for baby children use. Indoor Room Temperature Humidity Thermometer with LCD Display The temperature humidity gauge has functions of measuring temperature, humidity and time, which is powered by 1*AAA battery. It can be hung and set on desktop or countertop. Perfect for Indoor Living Room, Home, Office Use With its accurate monitoring humidity and temperature, it suits for indoor room use, especially for baby and children. Way to Operate: MOOD button- switch time to 12/24H mode, and turn alarm to fixed reminding time. ADJ button- adjust fixed time to established time or switch alarm function to hourly chime. MEMORY button- the button to indicate MAX/MIN temperature humidity value, and clear the recording values for around 2 seconds. Reminder: Can't use alkaline battery! Use only ordinary carbon batteries! colour: Black+White material: plastic Size: 10.5*9.8*2CM Package Contents: 1 * Thermometer 1 * English User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.