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I bought a smart plug, which doesn't seem to support measuring electricity usage with its native app.
I am wondering what the chance is, that this is a pure software feature and if I would be able to measure electricity usage by simply using a different app?
If yes, what app could I try?
No.
Measuring power usage requires dedicated hardware. If the manufactures app doesn't support that feature it is very unlikely the required hardware is present in the device.
According to this Amazon page, the Teckin SP20 supports it.
Also according to that Amazon page, the item does not have a UL listing. They claim to be applying for an ETL listing, which would be equivalent. In the meantime
It is total safe,you do not have to worry at all.
