Dobrý den, probíral jsem se svými nákupy na Alza.CZ a také jsem narazil na fakturu Záložní zdroj APC Back-UPS 400. Vidím nákup 16.1.2013. to znamená již více jak před 9 lety. Mám ten záložní zdroj jako ochranu proti výpadku proudu v kotelně pro 1 ventilátor kotle a 2 čerpadla (+ také přepěťová ochrana). Zejména pro situace výpadku proudu v síti při natápění 35 kW kotle na dřevo. V takovém případě nechám běžet pouze 1 čerpadlo a se záložním zdrojem mám cca 1 hodinu k dobru. Bez toho by to byla katastrofa. Vše zatím funguje na jedničku (abych to nezakřiknul). I dnes vidím model v sortimentu včetně náhradní baterie. Takže maximální pochvala. Děkuji výrobci i prodejci za správnou strategii. Z. Jón, Hořicko.
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