Ensure your home remains protected from water damage even during power outages with the Guardian GVCB1 Valve Controller Battery Backup. This essential accessory seamlessly integrates with your existing Guardian Valve Controller, providing up to twelve hours of power without electricity. It's simple to install—just slide the battery unit into the rear of the Valve Controller. Don't let a power outage compromise your home's safety. Add this reliable battery backup to your leak prevention system today!