191664 Walchem Power relay board, W110, 3 dry, passive pH/ORP

Power relay board, W110, 3 dry, non-passive

Power relay board, W110, 3 dry, non-passive

Power relay board, W100, 3 powered, passive pH/ORP

Power relay board, W120, 2 opto, 1 dry, passive pH/ORP

Power relay board, W100, 3 powered, non-passive

Power relay board, W120, 2 opto, 1 dry, non-passive

Option Board, pH/ORP, W400 Series

W100W Series Plug into more options in water treatment control! Three powerful control outputs make the Walchem W100 a more versatile, high value choice among entry level water treatment controllers...

The WEL Series are modular in design with a rugged CPVC housing that contains the electronics. pH and ORP cartridges can easily be connected or replaced in minutes without tools. The cartridges...