This device is required to connect to an existing Wi-Fi Network, so that it can sync with various RainPoint sub devices, gathering all the required info and sending it to the RainPoint + Smart app on your phone. The Rainpoint Smart Wi-Fi Hub is ideal for users looking for a flexible, efficient way to automate their garden's irrigation, conserve water, and support plant health through smart technology. Sub devices that can connect to the hub are the : RainPoint Wireless Smart Wi-Fi High Precision Rain Gauge RainPoint Wireless Smart Wi-Fi Pool Thermometer and Display Screen RainPoint Wireless Smart Wi-Fi Water Flow Meter RainPoint Wireless Smart Wi-Fi Temp & Humidity Meter RainPoint Wireless Smart Wi-Fi Soil Moisture & Temp Meter RainPoint Wireless Smart Wi-Fi 1-Zone Irrigation Timer RainPoint Wireless Smart Wi-Fi 2-Zone Irrigation Timer What's in the box? 1 x Wi-Fi Hub (Connects to an existing W-Fi Network) 1 x Power Cable (USB to Type-C) 1 x Instruction Manual 1 x Warranty Card