Good question. I would like to change my Dometic controller to the newer style but since we have an earlier version of the Penquin AC/heat pump I bet its not swappable. I believe the 5 button thermostat is analog and the Comfort Control Center for the Penquin II are digital. I've see some circuit boards available to allow a Penguin II to use the older 5 button thermostat but I can't find any info for using the newer thermostat models on the Penguin I AC/heatpump.
If your older thermostat is broken you can still get them.
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