The Auto Service Thermocouple Rosemount 3051L2AADFD21AA 1829020 is a digital RTD sensor unit with a stainless steel flange, designed for industrial automation and motion controls applications. Made by Automation Service in the United States, this unit is compatible with ControlLogix controllers and is sold individually. Ideal for PLC temperature modules, this thermocouple offers accurate temperature readings for precise automation and control systems.