mircolino Posted March 21 Share Posted March 21 I would like to install a i4DC and closeby I have a Bticino intercom powered by 27VDC (see attached image). Can I use it for the i4DC as well? Thank you! Quote Link to comment Share on other sites More sharing options...
Members thgoebel Posted March 21 Members Share Posted March 21 After a quick glimpse at an excerpt of the circuit diagram it is very likely the Shelly plus i4DC will withstand 27V DC. But it’s at your own risk - specs say max. voltage is 24V DC! Quote Link to comment Share on other sites More sharing options...
mircolino Posted March 21 Author Share Posted March 21 7 minutes ago, thgoebel said: it is very likely the Shelly plus i4DC will withstand 27V DC. But it’s at your own risk - specs say max. voltage is 24V DC! Thank you! I'll give it a try and report back🙂 Quote Link to comment Share on other sites More sharing options...
Members mschaeffler Posted March 21 Members Share Posted March 21 (edited) to be sure, you could have 4 diodes 1N400x in series in the supply line. Edited March 21 by mschaeffler 1 Quote Link to comment Share on other sites More sharing options...
mircolino Posted March 22 Author Share Posted March 22 I connected it yesterday (26.8 VDC measured) and after almost 24 hours it's still working perfectly. Should I worry long term? Or 24 hours are enough to say the i4DC is safe to use with 27V DC? Quote Link to comment Share on other sites More sharing options...
Members thgoebel Posted March 22 Members Share Posted March 22 Don‘t worry! But keep it in mind that Shelly is working slightly out of specs… 1 Quote Link to comment Share on other sites More sharing options...
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