Turn an old smoke detector into a flood detector

[ErikH]

I figured this was relevant! :)

http://wolfebaine.blogspot.com/2011/12/15-easy-water-detector.html

Simple stuff for sure.

[rrasco]

That's cool. If you read the comments you'll see some links, one to a $15 unit on amazon and a $10 unit at Home Depot. That is, if you don't want to build it yourself. I sure enjoy a good DIY.

http://www.amazon.com/Leak-Frog-LF001-Water-Alarm/dp/B000WMSTUO
http://www.homedepot.ca/product/water-alarm/925817

[afgun]

There are instances when DIY doesn't make sense (unless you have an old smoke detector kicking around or are bound and determined to DIY). I bought a couple of battery operated flood detectors (they're LOUD) from one of the big box home improvement stores for about $10. Has the ability to relocate the pads too (e.g. you want to sense water on the floor but want the alarm sitting up higher)

[Teeb]

Also, if you have ADT, they have flood sensors that will hook up to your alarm system and send you a notification if it ever goes off. I'll be adding them soon.