Delavan Sonac 220 Series 11L (11L220) Level Switch Sensor 1-Piece, $768.63 https://www.ebay.com/itm/154351307375?hash=item23f00e0a6f:g:…
Complete Sonac 220 Unit With 11L Sensors And Mounting Hardware $2,691.12 https://www.ebay.com/itm/170919271953?hash=item27cb951e11:g:…