sump pump water sensor

[khanhnguyen99]

Hi all,
I am looking for the water sensor for my sum pump, which help to turn on/off on setting water level. Would you please let me know what type should I use and where can I buy? I would like to use the merchanical with the floater, NOT the electronics sensor.
Thank you

[Greatwhite]

I have seen a lot of various water level sensors on eBay... Search for Auto Top Off, and you'll get some results.  I'm currently looking at a JBJ auto top off system which seems to be reliable, but it's electronic which you indicated that you don't want.

(the best one & most reliable that I've heard of is the Tunze Osmolator, by the way)

[moused]

Are you looking for something like this:
http://autotopoff.com/misc/

[Greatwhite]

Oh ya, that's another site that I saw ATO stuff on.  

[khanhnguyen99]

Hi all,
Thank you very much for your advices.