From single to multi-point control, Red Lion has the right PID controller for any application. Red Lion provides a wide range of proportional-integral-derivative (PID) controllers that are rugged, reliable and easy to deploy. Our PID controllers offer industry-leading features and reliable performance designed for the most demanding applications.

  Model PXU PXU PXU PAX2C DLC Modular Controller Graphite HMI
  Size 1/16 DIN 1/8 DIN 1/4 DIN 1/8 DIN DIN Rail DIN Rail Various Sizes
  Display Capability    
  Universal Signal Input
  Single Loop
  Dual Loop      
  Multiple Loop        
  Panel Mount    
  DIN Rail Mount        
  Heater Current Monitor  
  Remote Setpoint      
  Ramp/Soak Capability

For possible replacements of discontinued models, please see our Product Replacement Guide.

Panel Mount Controllers


The Red Lion PAX®2C PID controllers offer universal inputs, including thermocouples, RTDs, process signals, DC current/voltage and resistance. Available in 1/8 DIN size models, PAX2C controllers work with field-installable option cards to seamlessly support changing applications and upgrade requirements. Learn more.


Red Lion’s PXU enables tighter, more reliable control over a wide range of processes from a single PID controller. Available in 1/16, 1/8 and 1/4 DIN size models, the PXU accepts process, thermocouple and RTD signals and presents values on one of the industry’s largest dual displays. Available options include DC analog control, RS-485 communication and user inputs. Learn more.

DIN Rail Mount Controllers

Modular Controller

The Modular Controller from Red Lion allows users to seamlessly integrate multi-zone PID control, data acquisition and I/O into PC, DCS or PLC control systems. Stack up to 16 hot swappable modules together for an easy space saving solution. Available features include protocol conversion, built-in web and FTP servers. Learn more.


Red Lion’s Dual Loop Controllers (DLC) offer dual independent PID control loops to provide multi-zone process control. The DLC accepts signals from both temperature and process inputs and supports square root extraction flow sensor applications, dual analog output control and RS-485 communications. Learn more.