Digital 5 in 1 Wireless Weather Station Color DisplayThe wireless 5 in 1 sensor contains a self emptying rain collector for measuring rainfall, anemometer, wind vane, temperature and humidity sensors. It is fully assembled and calibrated for easy installation. It sends data by a low power radio frequency signal (917MHz band) to the main display unit up to 150m away (line of sight). The main display shows all the weather data received from the 5 in 1 sensor outside. It remembers the data for a time range