The Yokogawa UT55A-NNN-11-UU Digital Indicating Controller is a panel-mounted device that combines PID control with a digital PV/SV display to monitor and regulate process variables for stable industrial operation. It accepts universal inputs (thermocouple, RTD, or analog) and provides model-dependent outputs (relay, voltage pulse, or current) to drive actuators. Powered by 100–240 VAC and designed for control panel installation, it offers multi-alarm capability to help operators respond to deviations and supports optional communications for system integration. Common replacements include UT35A and UT32A.
