The easiest way to determine how your FSR works is to connect a multimeter in resistance-measurement mode to the two tabs on your sensor and see how the resistance changes. Because the resistance changes a lot, a auto-ranging meter works well here. Otherwise, just make sure you try different ranges, between 1 Mohm and 100 ohm before 'giving up'.This guide was first published on Jul 29, 2012. It was last updated on Jul 29, 2012. This page (Testing an FSR) was last updated on May 04, 2015.