How Shelly UNI works

    Hi, first of all I want to thank you for any information you could provide.

    I am old fan of Shelly 1, I have used the device everywhere to automate tons of things. But I can not make Shelly UNI work.

    I just bought a Shelly UNI to detect when 12VDC happens in another circuit, so I get a notification in a cellphone when that happens and at the same time I would like to use the outputs to turn on some other stuff using relays.

    I have searched everywhere and the device is not well documented, or at least I have not found anything to tell me how to make it work. Reading here I learned the INs and OUTs are related, I suppose there are relays to send whatever is on the INs to the OUTs, but I simply can not get any voltage in the OUT having that in the IN. I am using the web interface to turn on the channel and I see nothing in the OUT.

    Maybe I am missing something to make it work or I am not understanding how the device works.

    Can someone please advice ?

    Thank you so much.

    Like the Shelly 1 the Shelly UNI has “dry”outputs (UNI has two of them, Shelly 1 only one). And the outputs of UNI are made with PowerMOSFETs - another difference, cause these MOSFETs are are capable to switch not more than 100mA at a max. voltage of 36V DC! In order get a 12V DC output e.g. from Shelly UNI OUT-1, you’ll have to connect one of the black Leads of OUT-1 to 12V DC - the other black lead gives the signal! Please have a look at the description in the “lexicon”: Click!

    And by the way: Welcome to the forum! And a merry Xmas on top!

    „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)

    I followed this thread because I have the same problem. I connect the Vcc 12v(red) cable directly to the Out1(+).

    But don't get a measurable VCC out. UNI GND to Out1(-) is missing.

    In the App and Cloud UI i can turn outputs on/off, and both have "relay on". The UNI white cable is connected so I see that ADC gives 11.91v.

    What's missing?

    /Parlan

    Did you connect the Shelly and the voltmeter as following:

    pasted-from-clipboard.jpg

    ? (Supply voltage of Shelly is an example only; other voltages or AC supply is also possible…)

    „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)

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