Hey Ruth.....
Welcome to the board....
If you have a float switch in your sump or in your tank this can be wired to a relay box with a 3 prong plug you can use for a pump or a sevo valve that will open and close a ro line (if you have a preasure tank on it)
talk to NEWGUY he made and shipped a great set up to me at a very good price.
good luck
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Richard
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My wife believed me when I told her it was only going to cost about $500.00. that was over two years ago and I'm still grounded.....