The Walchem WDP340-12N controller is now obsolete and has been replaced by the WDP440-12NU controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WDP340-12N and the WDP440-12NU have the same specifications with 4 pulse proportional outputs and 1 dry contact dedicated alarm, 120 VAC, pre-wired with four 10’ cables for EH metering pumps, two isolated analog (4-20 mA) outputs, no electrode.
Please click here to view and/or purchase the new replacement controller and to view literature.