This 5-in-1 Weather Sensor measures temperature, humidity, wind speed/ direction and rainfall. With it high definition color display you can toggle between outdoor weather, indoor comfort and daily records dashboards. Programmable Alarms allow you to receive alerts, so you can take action if conditions exceed your preferred range. The Weather Sensor contains a wireless range of up to 330 ft (100 meters). It is self-calibrating, providing you with the most accurate forecast for your exact location.