Starting at $257.00


Some models in stock. View available part numbers.

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  • Back panel or DIN-rail mount
  • Compact package
  • Touch-safe package
  • ±0.1 percent temperature accuracy
  • Agency approvals: UL, CSA, CE, W.E.E.E.
  • Solid state relay output
  • PID temperature control
  • Optional remote user interface
  • RoHS Compliant

The integrated control loop solid state Watlow EZ-ZONE® ST temperature controller offers complete thermal system control in a single package solution. With the Watlow EZ-ZONE® ST controller, you get a PID temperature controller already connected to a high amperage solid state relay. You also have the option of adding a properly sized heat sink, an over / under temperature limit, a shut-down power contactor, digital communications, and a remote user interface to the Watlow EZ-ZONE® ST temperature controller. Your life just became a whole lot easier when it comes to solving the thermal requirements of your system.

Because the Watlow EZ-ZONE® ST temperature controller system is modular and scalable, you only pay for what you need. You can stack the integrated thermal loop Watlow EZ-ZONE® ST temperature controller into multiple configurations to give yourself the flexibility to standardize on the product's platform to solve your wide range of application needs.

Applications for the Watlow EZ-ZONE® ST Temperature Controller

  • Plastics processing
  • Packaging
  • Environmental chambers
  • Semiconductor processing
  • Analytical instrumentation
  • General equipment
RoHS logo


Watlow SpecView HMI Software
Communicates with any EZ-ZONE controllers, flexible data logging and report generator


Please consider these optional accessories.

Watlow Remote User Interface
In-panel display and interface for the Watlow EZ-Zone ST Integrated Control Loop
RS-485 to USB Converter
Two-wire RS485 to USB converter
Part Number Price Available
Show Configuration
Base Price
Integrated PID Controller
Output 2: 0.5A SSR
Integrated Limit Controller
Limit ctrl mod:Output 3:5A Form C mech relay;Output 4:2A Form A mech relay (+$127.00)
Mechanical Contactor and Power Supply Options
Dual pole, 40 A Watlow contactor, 110/120V (ac) power supply (+$60.00)
Standard Bus connects to Watlow PC software, Remote User Interface,EZ-ZONE
Zero Cross 40A (48 to 600VAC ouput) (+$55.00)
Heat Sink
40A (+$35.00)
Standard Watlow
$534.00 1

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 2-3 weeks". Click here to select options