float sensor

I have the older version (V1) of the trigger sump with the float sensors, and I don't want to give them more money for an upgrade since they knew about this issue. Has anyone else had this issue with them stopping working and how to fix it? I have to run the roller several times a day now...

Hi all, So I'm planning my ATO and am going to do a min/max set up - the lower sensor tells the controller when to open the solenoid and the upper tells it when to close the solenoid. Is it better to use one mechanical and one optical or both the same? If it's one of each, does one work...