The Walchem WIND82-1NNNN controller is now obsolete and the closest equivalent is the WPH600PSSNN-NN controller. The new series has upgraded features; for reference, here is the description of the old model:
Multi I/O industrial water controller, two sensor inputs, prewired w/ USA cords, 7 powered relays, 1 dry contact relay, no analog outputs, 6 digital inputs, USB & Ethernet comms software/hardware, no add'l comms hardware, no add'l comms software.
Choose the new model on our WPH600PSSNN-NN page or select a model more suited to your needs from our WCN600 or WIN900 pages.