quick view Choose Options 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 calibration. OEM REPLACEMENT 120R-7-Z343B-156, 120R-7-Z343B156,... Choose Options Add to Wish List Add to My Wish List Create New Wish List Compare