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The system was designed for electrical energy usage data that be obtained through detection device can be
accessed and processed from an application on a user’s smartphone. The detection device can notice electrical
energy in the power cord of the electronic device. It has a different function with power as 18 watts up to 77 watts.
Detection of device and application in the system are well integrated because of status in application displays the
same result as the LED indicator on the detection device. The system has an accuracy of 1 Wh with an uncertainty
of 0.5 Wh. The result shows that monitoring duration for 60 minutes in accordance with the specification of the
electronic device being monitored.