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Uniterruptable Power Supply• A UPS is a battery back up for a device when the power fails.• A UPS will keep a device running for a pre-determined time.• The typical role of a UPS is to allow orderly shutdown, in the case of a computer, or to keep a device running such as a security system or fridge.• There are different types of UPS. The three basic types are Off Line, Line Interactive, and On Line.PCM UPS RangeWow (WOW)• Standby Modified Sine Wave (MSW) Offline Inverter• No Automatic Voltage Re …