Check Back For Availability quick view Check Back for Availability Zytron Control Products, Inc. Zytron Direct Replacement for OEM 120R-7-Z343B-156 MSRP: $330.00 DESCRIPTION The Series 120R is a low cost, panel mounting electronic temperature controller with integral set point potentiometer and special offset calibratio Check Back for Availability Add to Wish List Add to My Wish List Create New Wish List Compare