Walchem - pH/ORP Preamplifier

What do you do when your favorite pH/ORP electrode isn't available with a built-in preamplifier, but you need to send the signal a few hundred feet?  Hook up to this external preamp and you can go 1000 feet if necessary!  Compatible with all of Walchem's controllers. NEMA 4X, epoxy coated, die-cast aluminum wall mount enclosure Boost signal for reliable transmission up to 1,000 ft via 22 awg wire No temperature simulation resistor required when used with Walchem controllers