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  • 0-5 Vdc and 4-20 mA ... it's 0-5 Vdc or 4-20 mA ... they both carry the same information Commented Jul 25, 2024 at 21:42
  • what is your question? ... please add a focused, answerable question to your post Commented Jul 25, 2024 at 21:42
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    @jsotola - Thanks for highlighting the cross-site multi-posting of this question on EE and here. The copy on EE has been closed, so this one can continue without duplication of effort across the sites. Commented Jul 25, 2024 at 22:17
  • Welcome to SE/Arduino! Please take the tour to learn how this site works. Then come back and edit your question to clarify. -- Why did you tag with modbus? -- Are you aware that your Arduino is able to measure voltages? What stops you from using analogRead()? -- If you have an attempt of a sketch, please add it. And why it does not work for you. Make sure to format it as source. See the help of the edit box for details. Commented Jul 26, 2024 at 5:57