WME (wood moisture equivalent) pin moisture reading. Relative pinless moisture reading for non-invasive measurement. Digital LCD readout with backlighting feature and tri-color LED bargraph. Quickly indicates the moisture content of materials. Pinless measurement depth to 0.75” (22mm) below the surface. Electro-magnetic sensing technology. Built-in calibration check, Low battery indication. Complete with 9V battery, replacement pins, protective cap, and pouch case.