Color display receives wind speed, direction, rainfall, temperature, humidity, UV and Solar Radiation from the outdoor sensor array wirelessly, and barometric pressure, humidity and temperature from the indoor sensor. The receiver(display) can connect to Wi-Fi, and upload the data to web: www.wunderground.com, wow.metoffice.gov.uk, www.weathercloud.com (Remark: The weather station only supports the 2.4 GHz band. ) Supports up to 8 thermo-hygro sensors(optional, to be sold separately, sensor model: WH31), you can place the optional thermo-hygro sensors in different locations nearby for monitoring. There’re 2 backgrounds (light and dark colored) for the display, it is easy to read in the day time or night time. Wireless Frequency: 433Mhz