Watlow EZ ZONE RM Limit Module Controller

  • 4 to 12 safety limits per module
  • Limit & power control 1 to 152 loops
  • Up to 192 limit loops per system
  • Approvals: UL, CSA, CE, RoHS, FM


Watlow EZ-ZONE RM High-Density Limit Modules which integrate temperature, process, limit, and power control from 1 to 152 Loops. They are DIN-rail with mounting. Ambient operating temperature range is 0 to 149 Degree F (-18 to 65 Degree C). In addition, it has one remote limit reset.

Moreover, the EZ-ZONE RM high-density limit module used in conjunction with the EZ-ZONE RM temperature control module and high-density control module offer agency approved over and under temperature limit function to ensure system safety. In addition, the EZ-ZONE RM high-density limit controls 4, 8, or 12 limit loops per module or up to 192 limit loops per system.

Watlow EZ ZONE RM Limit Module Features and Benefits

1 to 128 loop limit controller

  • Eliminates compatibility issues often encountered with using many different discrete components and brands
  • Saves engineering time and labor costs while shortening project schedules
  • Allows a common limit controller platform across many design applications


  • Allows standard bus communications
  • Ability to utilize EIA-485, Modbus® RTU options

SPLIT-RAIL control

  • Minimizes the length and cost of wire runs and improves system reliability by locating inputs closer to sensors and outputs closer to loads


  • Prevents unplanned process shutdowns and product loss by switching to a backup sensor if the primary sensor fails


  • Saves time and reduces complexity by automatically configuring a new module with the same parameter settings as the replaced module

We provide engineering and product support for your application.


Watlow EZ ZONE RM Limit Module More Information available, just ask us:

Specification Sheets

EZ-ZONE Configurator Software, EZ-ZONE LabVIEW Instrument Driver, EZ-ZONE RM Rail Mount Controller, Communication Adapters Silver Series EM Operator Interface Terminal, and SpecView SCADA Software.

Software and Demos

Comm7 – Communication Diagnostic Software ,EZ-ZONE Configurator Software, EZ-ZONE Default Implicit Assembly, EZ-ZONE Family DeviceNet EDS File, EZ-ZONE GSD Editor Installer, EZ-ZONE Implicit Message Assembly Programming Application, EZ-ZONE Profibus Demo Project, EZ-ZONE RML Firmware Upgrade, Modbus RTU Diagnostic program and Modbus RTU program for EZ-ZONE PM, RM and ST, Modbus TCP Diagnostic program for EZ-ZONE PM, RM and ST, Sample Modbus Communications Modules for Programmers, and SpecView SCADA Software.

User Manual available

Watlow EZ-ZONE RM Limit Module

Training and Education

From Installing, Configuring, and Changing Display Units on EZ-ZONE to White Papers, Technical References and 3D various file types.

Technical Documentation

Download PDF Files:

Watlow Heaters, Sensors and Controllers Brochure

Watlow RM Limits and Scanners