6/11/2023 0 Comments Apc ups es 550 battery![]() Audible noise at 1 meter from surface of unit 45.Storage Temperature 5 - 113 F (-15 - 45 C). ![]() Operating Environment 32 - 104 F (0 - 40 C).RJ-11 Modem/Fax/DSL protection (two wire single line). ![]()
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