FloodStopOnsite Pro FS3/4H Washing Machine with Straight Valves

When water is detected, does this also shut off electrial power? If not, what happens to tub water if dain is clogged and machine is trying to empty

How long will it run on batteries (assuming it doesn't detect water and shut the valve and sound the warning tone)?

What it the difference between FS3/4H-90 v4 and FS3/4H-90? The v4 product is more expensive. What is added for the additional cost?

Will the washer become damaged if it tries to function with the water off?