The industrial controller integrates an entire assembly of control loop functionality in one space-saving, DIN-rail mounted package. The controller can be used as a PID temperature/process controller, an over/under limit controller or these functions can be combined into an integrated controller. Other control functions can be integrated as well, such as high amperage power controller output, creating a complete and integrated thermal loop controller all in one package. The unit can be configured with between 1 to 16 modules controlling from 1 to 64 loops. Because the controller is single-loop scalable, customers pay only for what they need – exact loop count. Utilizing an integrated controller solution reduces wiring time and termination complexity, improves overall system reliability, reduces termination and installation costs and eliminates compatibility issues encountered when using many different components and brands. In addition, integrated controllers reduce troubleshooting time and downtime costs since the system can specifically identify to the operator if there are any problems with a sensor, controller, solid state relay (SSR) power output or heater load. It also offers current monitoring for the entire system, on-board data logging, sensor back-up capability and TRU-TUNE®+ adaptive control, which provides tighter control for demanding applications. There is no need to learn a new menu flow or wiring and connection scheme because the EZ-ZONE RM shares a common user interface, menu structure, wiring and connector labeling and user manual support documentation with its other family members (EZ-ZONE PM and EZ-ZONE ST). This new rail mount integrated multi-loop controller is ideal for semiconductor processing, photovoltaic, packaging, plastics processing and a variety of other applications that require multi-loop control.