The digital weather station provides 10 functions: Weather forecast,Atomic Clock,outdoor temperature and humidity, indoor temperature and humidity, date and time, alarm clock, barometer,Moon phase,Temperature alert. 7.5 INCHES LCD SCREEN WEATHER STATION WITH 3 CHANNELS: Wireless temperature forecast station supports up to 3 wireless outdoor sensors and monitors inside outside temperature & humidity of multiple locations. Comprehensive temperature and humidity monitoring: The indoor outdoor thermometer wireless monitors the temperature and humidity of3 around in real time, helping you maintain a comfortable and healthy living environment. Please choose the correct time zone for your weather clock according to your location (-8 ,-7 ,-6 ,-5 EST). The atomic clock searches for WWVB signal automatically or manually,It will automatically adjust the time. home weather station can set two alarms at different times at the same time, which will help you better control your time. The wireless weather station will predict the weather for 8-24 hours based on the temperature, humidity and pressure of the sensor (please put the sensor of channel 1 outdoors, which will effectively improve the accuracy of the forecast). And display through 6 dynamic icons: sunny, cloudy, cloudy, rainy, rainy, snowy. You can better plan your outdoor activities. Specifications: Model: PT20B Screen Type: Positives LCD Temperature Measuring: Indoor measurement ranges: -9.9 ~ 50(14.2 ~ 122);; Outdoor measurement ranges: --40 ~ 70(-40 ~ 158). Humidity Measuring: Indoor & outdoor measurable range: 20%RH ~ 99%RH. weather stations can be powered by a 100-240v AC adapter (not included) or AAA battery (not included). NOTE: The screen will go out automatically in about to save power when using battery power. Note: AAA batteries are not included. Material: ABS colour: White Package Contents: 1 x PT20B Weather Station 2 x Wireless Outdoor Sensor 1 x USB Power Cord Only the above package content, other products are not included. Note: Light reflection 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.