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电源与 UPS

P3

P3 P4400 Kill A Watt

Plugs between the wall and the machine and tells you what it actually draws. Worth owning before any argument about running costs, because guesses about idle draw are usually wrong by a factor that changes the answer. The plain model: it measures, it does not compute a bill. Not tested here yet.

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规格

Measures
Volts, amps, watts, hertz, VA
Display
LCD
Cost forecasting
No
Alarms
Low temperature

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