RO auto shutoff???

You will also need one of these if you don't already have one on your unit.

http://www.airwaterice.com/prod..._campaign=
What kind of RO unit do you have anyway?  Most of the better ones come with them.

 

Thats all you need is the float valve and what waverz linked you to. Sometimes the auto shut off will have air build up when you first install it and it won't shut off immediately but this will go away with after a little while. I read this on a few forums and believe it was mentioned in my instructions when I got my unit from Air, Water and Ice. Just thought I would add that little tidbit incase it happens. I didn't see it happen to me but never know.