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Keep an eye on your electricity usage with this handy Electricity Usage Monitor With this device, you can see how much power your devices are using whilst on standby The built-in battery allows the device to retain memories of its settings Tells you real-time readings of your power consumption, current and electricity costs Easy to use: Plug the meter into the wall, and then your device into the meter For technical specifications, please see Full Details Save 63% on this Electricity Usage Monitor