The WatchDog Sensor Pup is a component of the WatchDog Retriever & Pups 900MHz RadioNetwork. It offers growers, researchers and golf superintendents a broad solution for site-specific monitoring with diverse sensor compatibility. Connect up to 4 external sensors via a 2.5mm stereo plug. Track high, low, current and average values of each sensor during each logging period. Monitor microclimates within one mesh network that will collect all the data so you can quickly analyze each site to determine needed changes. Communication range is 2,500 feet or a 1/2 mile line of sight between pups or retriever.