The 8850830 Hub 3.0 from LeakSmart is a smarter, more flexible, and disaster proof system hub that communicates between sensors, the cut-in valve or valve controller, and you. New built-in WiFi now frees the hub from being installed next to your router. Place it anywhere you like in the home for optimal coverage and strengthened communication between devices. Built-in re-chargeable battery works even if power goes out. Latest Zigbee 3.0 protocol ensures it works even if WiFi is down.