R20 or CC20 modules in an older Sensor rack with MPE

Hi there,

I've got a wonderful workhorse 12 channel Sensor pack that dates from the mid 90's, and has an MPE module for control. I went digging around in the manuals and forum, but could not find anything about an MPE supporting the relay or CC modules.

Do they work? Or do I need to upgrade that rack to a CEM to get the functionality?

thx!

AJ

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