The LM500 maintains oil level on any size engine. It also supports installations that require a three-wire, snap-action switch. The form C (three wire) contact allows a controller/annuniator to be wired as a closed-loop system, resulting in a reliable fault-sensitive circuit. Refer to LM500 Series flow Rate Chart for appliction data. See attached link for more data
https://www.fwmurphy.com/uploaded/documents/pdfs/1010627.pdf
Unit of Measure
