Does the Flo Smart Water Monitor and Shutoff automatically shut off the water?

This article includes detailed information on the Flo Smart Water Monitor and Shutoff, also known as the Flo by Moen Water Shutoff. 

Yes, in the event that the Flo Smart Water Monitor and Shutoff detects a critical leak in your home plumbing system, it will automatically shut off the water to your home. You can override this shut off through the Flo by Moen app, or by manually turning the knob on the Flo Smart Water Monitor and Shutoff device.