> Electrically operated main water shut-off valve, and water sensors at
> appropriate points; laundry room, under sinks...   Smoke detector

Even just separate shutoffs for each floor of the house would be useful.
Having to shut off your entire water to fix a single leak is a problem.
-- 
D. Jay Newman           ! Author of:
jay@sprucegrove.com     ! _Linux Robotics: Building Smarter Robots_
http://enerd.ws/robots/ !    "A backward poet writes inverse."
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