IMO, anyone with a Norcold 1200, should have both the ARP and SS-30 Halon extinguisher. We added the Amish Cooling Unit to our Norcold 1200, as a safety upgrade. We added extra cooling fans on the coils. The SS-30 Halon and Smoke Alarm in the rear cabinet. We traveled this way 4-5 years, and confirmed that our Solar Panel and Battery Bank had more then enough capabilities to support changing to a Samsung. And, I was beginning to have intermittent problems with what I thought was a failing Control Module for the fridge.
We did buy the ARP too, and I was about to install it when we made the decision to shift to the Samsung instead. I know several who have installed the ARP, including the gent I gave out unit to, and all are pleased with the results. Cheap insurance.
And note. Our decision to go to the Samsung, was based more on wanting the larger capacity. If we'd retained the 1200, I would have added a replacement Control Board at the time of installing the ARP.
Best to all,
Smitty