Our wireless weather station allows you to stay a step ahead of the weather. Measures temperature, rainfall, barometric pressure and wind speed. Wireless technology allows outdoor unit to communicate with indoor display. Easy to use display panel with programmable functions. Works with external sensors for even more functionality. Uses 433 MHz radio transmission linking all sensors. Batteries not included. Dimensions: 8.5" x 6.3" x 1.3" (stand excluded).