The Walchem WPH410-54NN controller is now obsolete and has been replaced by the WPH410-54NU controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WPH410-54NN and the WPH410-54NU have the same specifications with on/off control outputs, hardwired, cable glands, single isolated analog (4-20 mA) output, none.
Please click here to view and/or purchase the new replacement controller and to view literature.
