There is a battery as there is a reading. I just can't read it. Actually if I try real hard I can see 0 for settings 2 and 3.
I called them this morning and they are sending me out a new one.
Meanwhile, this RODI with booster pump is a beast. Might be even getting out a little more than advertised.
When I first connected the booster pump I was getting 90 psi, but I dialed it back to 80.