Melnor RAINCLOUD/WiFi AquaTimer Add-On Faucet Valve Unit, Requires Raincloud Controller/WiFi AquaTimer, 4 Valve, 1 Pack Doubles the Number of watering zones on your Melnor WIFI Aqua timer Valves work with existing hoses and faucets. For outside use only Controlled manually or via the Internet when used with the WIFI Aqua timer Require Melnor WIFI aqua timer and 4 x AA batteries, not included