Feature:1. Multiple Functions: Digital hygrometer has multiple uses, it is not only a thermometer, a hygrometer, but also a projection alarm clock and a weather clock, which is highly practical.2. 60m Data Transmission: Indoor outdoor thermometer 60 meters long distance data transmission, can be hung, can be placed upright.3. Temperature Prediction: The digital room thermometer predicts temperature, automatically changing from indoor temperature to outdoor temperature.4. Projection Function: The alarm clock is projected on the wall in a soft red color with a very clear view, but it won't disturb you or your child's sleep.5. Multiple Languages Display : The indoor outdoor hygrometer includes a display in 7 languages and is easy to use, just install the battery.Specification:Item Type: Indoor Outdoor ThermometerMaterial: PlasticHost Battery Parameters: 1 x CR2032 Button Battery (Not Included)Receiver Battery Parameters: 2 x AA Batteries (Not Included)Projection Function: Support Simultaneous Projection of "Time and Temperature"There is a Switch to Choose Continuous Projection or Turn off Projection: Support"Indoor Temperature + Time" and "Outdoor Temperature + Time" Alternately Display: SupportDual Alarm Function: Choose from "Monday to Friday", "on Weekends" or "7 Days a Week"Weather Forecast Function for the Future 8 Hours: SupportIndoor Climate Comfort Display: SupportIndoor Heat Index Numerical Display: SupportOutdoor Dew Point Temperature Display: Support3 Levels of Indoor/outdoor Mold Risk Reminder: SupportTemperature Check:Indoor Measurement Range: -9.950 (15122)Outdoor Measurement Range: -20+60 (-4140)Humidity Detection:Indoor/outdoor Measurement Range: 20%RH95%RHWeight: Approx. 478g / 16.9oz.Package List:1 x Indoor Outdoor Thermometer1 x Receiver1 x Power Adapter1 x User ManualNote:Host and receiver are shipped without batteries.