Answer Hello Jose. The micro-switch is marked. Should read NO and COM. When testing, as you press the button, the contact should close for continuity. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Thursday, January 16, 2014