I've been surprised by the numbers of plumbers I've talked to who aren't familiar with any of the systems. If you've ever seen the results of one seriously leaking in an attic, you'll quickly become a believer.

Some advantages of other systems are that the sensors can be placed anywhere and if water is detected, the entire supply is shut down. It would have been really handy the day I lost my balance and broke off the shut off valve at the toilet.

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The only reason some people get lost in thought is because it's unfamiliar territory.
- Paul Fix