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  • PID control loops
  • Over/under temperature limit control loops
  • 10 and 15 ampere power output/heater driver options
  • On-board data logging
  • Current measurement input
  • Sequencer start up and control function
  • Programmable timer and counter functions
  • Programmable math and logic option
  • Multiple communication protocol option
  • Mobile configuration with removable secure digital (SD) flash card

The Watlow EZ-ZONE® RM Scanner Module controller simplifies thermal system management. The EZ-ZONE RM controller family is comprised of six module types: an integrated on-off or PID control, monitoring and over/under temperature limit module, a high-density on-off or PID control module, a high-density limit only module, an input/output (I/O) expansion module, a high-density monitor/scanner module and a data logging and field communications access module. A system is configured by connecting any combination of module types to address specific application needs. The EZ-ZONE RM is extremely flexible and scalable allowing mixing and matching of I/O to configure 1 to 152 control loops and up to 256 monitor points.

Benefits of using an integrated controller solution:

  • Reduces wiring time and termination complexity compared with connecting multiple discrete products
  • Improves system reliability
  • Reduces termination and installation cost
  • Eliminates compatibility issues often encountered with using various discrete components and brands
  • Reduces troubleshooting time and downtime costs because the system can specifically identify any problems with a sensor, controller, solid state relay (SSR) power output or heater load
  • Complete thermal solution saves engineering time and labor costs while shortening project schedules

Multiple inputs; from 1 to 152 PID loops of control or monitor up to 256 analog inputs

  • Mix and match I/O to fit any application; from 1 input with 2 outputs to 152 analog inputs with 152 outputs, or monitor up to as many as 256 analog inputs all in one system
  • Reduces cost because only required loops are purchased
  • Allows a common controller platform across many design applications as both loops and outputs can be ordered in single increments

Additional Key Functions

  • Configuration communication port (standard bus)
  • Removable modules and connectors
  • Ring lug and front-screw terminal options
  • Profile ramp soak with 400 total steps
  • Retransmit and remote set point input virtually inside controller eliminating costs for input/output hardware
  • User configuration settings can be stored and recalled
  • Thermistor input
  • Elevated operating range of 0 to 149°F (-18 to 65°C)
  • UL® listed, CSA, CE, RoHS, W.E.E.E. FM, SEMI F47-0200, Class 1, Div. 2 rating on selected models

Power Supplies


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

Mounting Bracket


Watlow Remote User Interface
In-panel display and interface for the Watlow EZ-Zone ST Integrated Control Loop


Please consider these optional accessories.

Watlow Quencharc RC Suppressor
Protects EZ-ZONE controller outputs from damage that can be caused by voltage spikes from inductive loads (250VAC max)
Part Number Price Available
Show Configuration
Base Price
Connector Style
Right sngle screw connector (standard)
Input 1
4 universal inputs (T/C, RTD 2-wire, 10VDC, 0-20mA)
Input 2
4 universal inputs (T/C, RTD 2-wire, 10VDC, 0-20mA) (+$200.00)
Input 3
4 mechanical relay 5A, Form A (+$100.00)
Input 4
Standard bus
$646.00 1

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