The Walchem WDB400-1N5N controller is now obsolete and has been replaced by the WDB400-1N5U controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WDB400-1N5N and the WDB400-1N5U have the same specifications with 120 VAC, prewired, no 4-20 mA output, two standard electrodes (up to 250 psi), integrated datalogging and config file import/export via USB flash stick.
Please click here to view and/or purchase the new replacement controller and to view literature.
