The Walchem WDP410-1NNN controller is now obsolete and has been replaced by the WDP410-1NNU controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WDP410-1NNN and the WDP410-1NNU have the same specifications with with 4 on/off control outputs and diagnostic alarm relay, 120 VAC, pre-wired with 6” pigtails (if on/off) or with 10’ cables for e-class pumps (if pulse), no 4-20 mA output, no electrode.
Please click here to view and/or purchase the new replacement controller and to view literature.
