Is the Shelly plus 1pm capable of reading DC voltage and power?

  • I have the Shelly plus 1PM and successful using it to control the charging of a 48 volt eBike battery.

    The one issue I’m am having and I’m not sure is if the device is capable of is reading the DC voltage and current.

    The Shelly 1pm powers up, and connects to my WiFi.

    I can control the relay on/off and and I see the corresponding data on the mqtt broker.

    This is the topic data posted to the mqtt broker:

    {"id": 0, "source": "WS_in", "output": true, "apower": 0.000, "voltage": 0.000, "current": 0.000, "aenergy": {"total":0.000,"by_minute":[0.000,0.000,0.000],"minute_ts":1637005201},"temperature":{"tC":46.9, "tF":116.4}}

    Is it possible to read DC voltage, or is the plus 1Pm only capable of reading AC voltage and current?

  • No. All Shelly types with energy metering are only capable to count and measure AC current and voltage!

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)