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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"><a href="https://controlbyweb.com/">https://controlbyweb.com/</a></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">William Miller</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">Miller Solar</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"><a href="http://www.millersolar.com/">www.millersolar.com</a></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">CA License C-10 77398</span></p></div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Drake Chamberlin via RE-wrenches<br><b>Sent:</b> Tuesday, July 21, 2026 6:35 AM<br><b>To:</b> RE-wrenches<br><b>Cc:</b> <a href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a><br><b>Subject:</b> [RE-wrenches] Relay Drivers</span></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal"><span style="font-family:"Courier New"">Hello,</span><span style="font-size:10.0pt;font-family:"Courier New""></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Courier New"">The Morningstar relay driver is a great device. It can measure 48VDC nominal and operate relays based on the measured voltage. The problem is that, if it is measuring 48VDC nominal, it outputs the same. </span><span style="font-size:10.0pt;font-family:"Courier New""> </span></p><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span></p></div></div><div><div><p class="MsoNormal"><span style="font-family:"Courier New"">Is there anything besides a charge controller that can measure 48 VDC nominal and put out a small 12VDC current? The 12VDC output of an Outback or Midnite charge control is perfect. </span><span style="font-size:10.0pt;font-family:"Courier New""></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Courier New"">If a relay driver, with several channels, could do this, it would be a very useful device. Does anything like this exist?</span><span style="font-size:10.0pt;font-family:"Courier New""></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Courier New"">Thanks,</span><span style="font-size:10.0pt;font-family:"Courier New""></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Courier New"">Drake </span><span style="font-size:10.0pt;font-family:"Courier New""></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span></p></div><div><p><em><span style="font-size:10.0pt;font-family:"Courier New"">Drake Chamberlin</span></em><span style="font-size:10.0pt;font-family:"Courier New""></span></p><p><em><span style="font-size:10.0pt;font-family:"Courier New"">Athens Electric LLC</span></em><span style="font-size:10.0pt;font-family:"Courier New""></span></p><p><em><span style="font-size:10.0pt;font-family:"Courier New"">Ohio Electrical Contractor’s License 44810</span></em><span style="font-size:10.0pt;font-family:"Courier New""></span></p><p><em><span style="font-size:10.0pt;font-family:"Courier New"">NABCEP Certified PV Installation Professional</span></em><span style="font-size:10.0pt;font-family:"Courier New""></span></p></div></div></div></body></html>