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, and temperature alert. This 7.5-inch LCD screen weather station supports 3 channels and can connect up to 3 wireless outdoor sensors, allowing you to monitor indoor and outdoor temperature and humidity from multiple locations simultaneously. It offers comprehensive real-time monitoring of temperature and humidity in three different areas, helping you maintain a comfortable and healthy living environment. Please select the correct time zone for your location (-8, -7, -6, -5, EST). The atomic clock automatically or manually searches for the WWVB signal and adjusts the time accordingly. The weather station supports two independent alarm settings at different times to help you manage your schedule efficiently. Using data from temperature, humidity, and barometric pressure, the device forecasts weather conditions for the next 8 to 24 hours. Forecast results are displayed using six dynamic icons: sunny, partly cloudy, cloudy, light rain, heavy rain, and snow. This helps you better plan outdoor activities. Specifications: Model: PT20B Screen Type: Positive LCD Temperature Measurement: - Indoor range: -9.9C to 50C (14.2F to 122F) - Outdoor range: -40C to 70C (-40F to 158F) Humidity Measurement: 20% RH to 99% RH (indoor and outdoor) Power Options: 100240V AC adapter (not included) or AAA batteries (not included) Note: The screen will automatically turn off after a period of inactivity to conserve power when running on battery. Material: ABS Color: White Package Contents: 1 x PT20B Weather Station 2 x Wireless Outdoor Sensors 1 x USB Power Cord Note: Other items shown in images are not included. Note: Lighting effects and display differences may cause slight variations in the color of the product as seen on screen. Measurement error is +/- 13 cm.