The Omron K3NX-AD1C-C1 is a process meter — a panel-mounted indicator that reads and displays a process variable (temperature, pressure, flow, level) from a 4-20 mA or similar analog transmitter. It sits in the Measurement and Indicators category, under Meter Readers, within Automation and Control Systems.
For a BOM-freeze or spares-stocking decision, the mature status signals stable supply without imminent obsolescence risk.