Review on 🔌 TRC AECM20020-3-012 Electra Check Digital Monitor for AC Power Sources - Black with White Face (Small) by Eric Cooper

I like this device, it's smaller than it looks in the picture (which is actually good, makes it more portable) and displays my data really well. I bought it because we had occasional power outages, the main symptom of which is that my espresso machine's high pressure pump stopped working properly and made a grinding noise. some days. It's been like this for months. The utility, of course, denies any shutdown conditions. At least now I have reliable data on the mains voltage if everything works correctly. Now it's time to wait for the next episode of espresso not working to see what the voltage drop actually is. === Update === Bought a second unit (because I liked the first one so much) and the second unit shows 2-3 volts higher (stable) than the first. I emailed TRC regarding this and received no response. Return of the second part. (on the attached photo, the 2nd block below). I've tried swapping out the extension cord but that doesn't change anything so it's not the outlet or the extension cord at fault (deducting 2 stars for mismatch).