Maximize your performance with the industry-leading Watlow® LEGACY panel mount PID controller. The simple control and menu functionality make it the perfect choice for various applications and usage levels.

The controller includes one universal input and an option for up to two outputs, and it’s available in both 1/16 DIN and 1/32 DIN packages.

Hi-Watt offers Watlow® LEGACY as a dedicated over and under-temperature limit controller or as a PID process controller.

Benefits of the PM Legacy Controller

  • Bluetooth compatible
  • TRU-TUNE®+ Adaptive Control
  • Max Output: 15A NO-ARC


While there are many common features between the Watlow PM6 and the PM Legacy 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 Legacy no)

Watlow PM Legacy Spec Sheet 

Control/Limit Loops1
Mounting1/16 DIN Panel Mount
Max Output15A NO-ARC
Agency ApprovalsUL® listed, CSA, CE, RoHS, W.E.E.E., FM, SEMI F47-0200, Class 1, Div. 2 rating on selected models
Communication ProtocolsBluetooth, PROFIBUS DP, Modbus® RTU, SAE J1939 CAN Bus, DeviceNet™, EtherNet/IP™, Modbus® TCP, Standard Bus
TRU-TUNE®+ Adaptive ControlYes
Remote Limit ResetYes

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.