WDP410-521N, Walchem pH/ORP Controller (WDP410-521N)

The Walchem WDP410-521N controller is now obsolete and the closest equivalent is the WPH600HSSAN-NN controller. The new WPH600 series has upgraded features; for reference, here is the description of the old model:

with 4 on/off control outputs and diagnostic alarm relay, hardwired, cable glands, two isolated analog (4-20 mA) outputs, two preamplifiers (190783) w/10 ft. cables, prewired

Choose the new model on our WPH600HSSAN-NN page or select a model more suited to your needs from the WPH600 series controller or one of the other pH controllers.