I have a sump pump in my basement and sometimes the breaker or GFCI will trip or something so it stops pumping water while the washer is running or someone is in the shower which in turn would cause the basement to flood. So I ordered a “normally closed” ball valve and paired it with the T2 Relay. Now I’m able to turn my water main off/on through the app or HomeKit, but then if the power goes out or the electrical circuit trips, it will shut off the water so it doesn’t flood the basement. I also went for the bonus points of putting some of the leak sensors in a few places around the house so if the washer or dishwasher leak they will also trigger the T2 Relay to cut power to the valve and shut off the water before there is too much of a mess.
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