I've seen this asked before, but not for a while - and not regarding the ER-X.
Based on the MIBS I see supported and the lack of an input voltage value in the UI - I think that the ER-X does not have an input voltage sensor...is this correct?
In the handful of other threads about this - usually the answer is that "the higher end models have one"
Can anyone confirm which ER models do and don't have voltage sensors?