The Watlow PM PLUS controller picks up where the EZ-ZONE PM Integrated Temperature Limit Controller left off. Full of new features which allow for a simpler and less confusing user experience. At a glance, it is easy to see how this Watlow controller edges out the competition by opting for a simpler controller and also eliminating the number of cables required when configuring it.

One of the best things about the PM PLUS is that it is backward compatible with legacy Watlow EZ-ZONE PM controllers while at the same time offering many considerable upgrades and features. The controller is fitted with Bluetooth capabilities and is easily controlled remotely by Watlow’s EZ-LINK™ mobile app.

Like Watlow’s original EZ-ZONE PM, the PM PLUS can be ordered through Watlow distributors such as Hi-Watt as a PID temperature controller, or an integrated controller with multiple functionalities all rolled into a single unit.

Benefits of the PM PLUS Controller

  • Intuitive menu flow allowing for ease of configuration
  • Employs Watlow’s patent SMOOTH TOUCH keypad
  • Bluetooth compatible
  • Integrated limit controller and PID controller
  • High amperage power control output capabilities include directly driving 15 ampere resistive load
  • Current monitoring capable of detecting heater current flow while also driving output in the event of an open or shorted industrial heaters
  • Advanced communication capabilities and enhanced control options


While there are many common features between the Watlow PM6 and the PM PLUS some differences include the display type (7 segment LED vs LCD), keypad interface type (Elastomer vs SMOOTH-TOUCH), and independent safety limits (PM6 yes, PM PLUS no)

Watlow PM Plus Spec Sheet 

Description Information
Control/Limit Loops 1
Alarms Yes
Mounting 1/16 DIN Panel Mount
Profiling Yes
Max Output 15A NO-ARC
Agency Approvals UL® listed, CSA, CE, RoHS, W.E.E.E., FM, SEMI F47-0200, Class 1, Div. 2 rating on selected models
Communication Protocols Bluetooth, PROFIBUS DP, Modbus® RTU, SAE J1939 CAN Bus, DeviceNet™, EtherNet/IP™, Modbus® TCP, Standard Bus
TRU-TUNE®+ Adaptive Control Yes
Remote Limit Reset Yes

For more information on purchasing a Watlow temperature controller or Watlow heaters, contact Hi-Watt today. We specialize in temperature and process controls and industrial electric heaters.