Jay, I just saw your post concerning use of Shelly energy monitoring devices. Do you have an updated recommendation on which Shelly device to purchase so I can monitor 240 volt devices? Thanks
Joe
Hi @joeengr
There are a number of choices.
Shelly Pro Dimmer 1PM will do 240v, has wired ethernet, and is din rail mountable
If you want to save some money and don’t mind a Wi-Fi device then the Shelly 1PM Gen3 would be an alternative
Hope this helps
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I should have added that, according to the Shelly website, both devices are rated for 240v.
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How does this work? It is my understanding that the Shelly EM on monitors 120V circuits such that you can’t put CTs on the two hots and get a real Amp reading of the 240VAC circuit.
But you can monitor one 120V leg of the circuit, so do you just multiply that by two to get an approximate readingm
You can get an amp reading from two CTs on the hots - the only issue is they’re really split-phase 120v so the reference voltage needs to be between 1 hot and neutral or you just have to divide the watt value by 2
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Just got a Shelly em50pro to monitor a variable speed pool pump. Don’t have home assistant right now. Do have raspberry pi 2 and 3 and orange pi5b running adsb receivers and a weather station but am limited to running scripts created by others and changing config files. It looks like Shelly is able to perform an action, like access a url on power changes.
What would be the easiest way to get the Em50pro to show up in sense like a smartplug?