Sorry to ask such a dumb question, but how do I determine what the Keys refer to? I’ve just set up my 4th emonTx (c/w ESP wifi widget), and it reports through to my Emonpi.local fine. But under the Latest Data tab it shows this. I am fairly sure P1 is the CT1 input (the only one I have anything plugged in to, but what is MSG, E1 and pulse ? (I do have an AC adapter fitted for measuring Vrms).