No, it cannot - to the best of my knowledge anyway. And then, even if you could use it as a “microphone”, you’d need the software to process the signal - and again to the best of my knowledge, that doesn’t exist either.
I think there are three ways you can go:
- Add an emonPi PCB from here. This would give you two current and one voltage, temperature and pulse inputs, and the Atmel 328P processor that does all the energy calculations. It connects serially via the GPIO port.
- Add an emonTx, which would give you 4 current, one voltage, temperature and pulse inputs, and normally connects by radio, but it can be connected serially too.
- Add an Arduino Uno and an emonTx Shield - effectively the same as an emonTx.
When you add one of those, and set up emonhub.conf appropriately (if you don’t have one of the default set-ups), then the inputs will pop up in emonCMS automatically.