Plug-in Electricity or Power Consumption Meters: Difference between revisions

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While there are many brands and models, a good product should have the following capability:
While there are many brands and models, a good product should have the following capability:
* quickly display instant power load in watts, line voltage, total kWh consumption
* quickly display instant power load in watts, line voltage, total kWh consumption
* does not require battery to operate (simple maintenance)
* maximum and minimum wattage history shows device behaviour and power line impact
* does not require battery to operate even if running with it keeps last values (simple maintenance)
* able to withstand maximum socket current load (16 Amps for E.U. states)
* able to withstand maximum socket current load (16 Amps for E.U. states)
* reflective LCD display (greyish-green when off) for good readout in low light
* reflective LCD display (greyish-green when off) for good readout in low light
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* power factor display shows poor device design that loads the power line more than necessary
* power factor display shows poor device design that loads the power line more than necessary
* energy cost calculation may be useful but it is not mandatory
* energy cost calculation may be useful but it is not mandatory
* graph showing consumption variation over a day may be useful
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[[Image:Simple Plugin Electricity Meter.jpg|Simple Plugin Electricity Meter]]
[[Image:Simple Plugin Electricity Meter.jpg|Simple E.U. Plugin Electricity Meter]]
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