The 41260 transfer switch doesn't have low/high voltage check or other checks that the 40350 switch has. Thus I need the Progressive Industries unit. Since I already have that, I stuck with the 41260 again. If you get the 40350, then you don't need the Progressive because it does all the power checks that the Progressive does.
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Mel (Melanie) and Harry
2009 Tiffin Phaeton 40QTH
2014 Jeep Wrangler Sport
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