PM PLUS and EZ-ZONE PM controllers and limits in 1/32 to 1/4 DIN. Shop by size or let us match the part you have now.
Watlow PM controllers combine PID temperature control with alarm and limit options in standard DIN panel sizes. Seagate stocks both the current PM PLUS series and EZ-ZONE PM (Legacy) models, so you can buy new or match the controller already in your panel.
Pick the DIN size that fits your cutout, decide whether you need a controller, a limit or both, then choose outputs to suit how your heater is switched.
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A controller holds your setpoint. A limit is a separate, latching safety device that shuts the heat off and must be manually reset. Many heating systems need both.
PM3 is 1/32 DIN, PM6 is 1/16, PM8 is 1/8 and PM4 is 1/4. When replacing, measure the existing panel hole.
Common questions before ordering.
PM PLUS is Watlow’s current PM generation, and the models we list include Bluetooth connectivity.
EZ-ZONE PM (Legacy) models remain available for direct replacements. [Confirm current
substitutions with Watlow.]
Talk to a Seagate application engineer
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