We also have the Progressive Industries external/portable unit. We found them much easier to replace when they sacrifice themselves during an event than the hard wired units. And yes, we did have one give up the ghost during a storm... glad it was there to do so and glad it was outside the RV.
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John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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