Extech’s WTH600-KIT Wireless Weather Station Kit helps you plan your day to day outdoor activities that may be affected by weather conditions including businesses involved with construction, agriculture, and recreation. The kit includes an indoor Wireless Base Station with a large LCD displaying indoor temperature, humidity, and outdoor weather conditions, plus date and time. It also comes with an outdoor Wireless Transmitter with 5 built-in sensors, including a self emptying rain collector for measuring rainfall, wind cups for wind speed, wind vane for wind direction, and temperature and humidity sensors. It sends data by a low power radio frequency to the Base Sation up to 150 m (450 ft) away. The kit comes assembled for easy installation.