YoLink Smart Water Solutions: Our new X3 version commercial line wireless Valve Controller, (4) of our best-selling original Water Leak Sensors, Bulldog Valve Robot and (1) YoLink Hub Industrial Grade: Designed for commercial and industrial applications, with a ruggedized housing, extended environmental range and batteries sized for up to 10 years or 5000 cycles, our new X3 Valve Controller is ready for your home or commercial application No WiFi, No Internet, No Power? No worries! Only YoLink offers smart, wireless devices that can continue to operate, even with the loss of WiFi, internet, AND power! It is device-to-device wireless communication that does not require WiFi, internet, the Hub, or even AC power! We call it Yolink Control-D2D. You call it "no worries!" Start Smart! Don't buy a standalone water leak alarm if you can instead start the foundation of your new smart home! The Hub is compatible with a growing ecosystem of smart devices, including home security, smart locks, lighting & power control, temperature, humidity monitoring, thermostat, sprinkler controllers and more! No Plumber Required: Easy installation, only requiring a Phillips screwdriver. Unique mounting brackets take the guesswork and tricky adjustments out of proper alignment, resulting in dependable maintenance-free operation Requirements – Android or Apple smartphone, wired ethernet port or stable WiFi connection. *Optional central station monitoring, and optional add-on SMS and automated calls subscriptions are available. App is always free, with 5 free texts per device, plus 5, per month. Note: Bulldog works with lever handle only, it does not work with PVC Butterfly type valves or round handle.