Check the listing for details. 2-Pack Medidor Digital De Humedad y Temperatura Termometro Ambiental Higrometro. Color: White, Condition: New. Listed at 17.99 USD. Features:Large LCD display, multi-function.Indoor & outdoor temperature display, indoor humidity display and time display.Memory of MAX & MIN measuring value.12 hour/24 hour displaying system select-able.Clock, Date, Calendar Function (Month and Date).Pointing function on each hourEveryday alarm function.week display functionLow power consumption.High stability & accuracy.Desk-top placing or Wall Hanging Specification:Device color:WhiteTemperature range:Indoor&Outdoor -50~+70(-58~+158°F)Humidity range:10%~99%RHPower supply:1.5V*1 (AAA size)Device dimension:10.5*9.8*2.4cmDevice weight: 126gPackage size:18*13*4cmPackage weight: 162g Package included:2*Temperature & Humidity Meterbattery not included.to change to Fahrenheit Please look under the stand HOW TO USE THE HTC-1 THERMOMETER1.Install power battery（AAA).2. In the initial state, press "MODE" about 2 seconds, then the time digits start flashing. After that, you can press "ADJ" to adjust the digits' value. By pressing "MODE" continuously, you can set 'CLOCK'+ '12/24' +'MONTH' +"DAY".3. After time set, the 2 points between 'HOUR' and 'MINUTE' flashing. Press "MODE" once, the 2 points not flashing, then press "MODE" about 2 seconds and the screen display 'Alarm' mode. By press "ADJ", you can set alarm time. After setting alarm time, the current clock will display in 1 minute.4. Press "MEMORY", you will see the max/min temperature and humidity. Press "MEMORY" about 2 seconds to clear the max/min value. FREE SAME DAY SHIPPING 🚀FAST 1-3 DAY DELIVERY 🚚USA the Same Day Shipping!🚚Shipping InformationSHIPS WITHIN 24 HOURS(WORKING DAYS)SHIP IMMEDIATELY 😊Refund & Return PolicyWe offer a 30-day return policy on all items purchased from us.Return shipping is the responsibility of the buyer.Please contact us if there is any problem with the product/shipping, we will provide a satisfying solution:) FREE SAME DAY SHIPPING 🚀FAST 1-3 DAY DELIVERY 🚚Limited quantity!100% Satisfaction Guaranteed