Extech Non-Invasive Pinless Moisture Meter, 0 to 100%

Relative pinless moisture reading for non-invasive measurement from 0.0 to 100.0 with 0.1 resolution Multifunction backlit triple LCD display Pinless measurement depth from 0.78 Inch (20mm) to 1.6 Inch (40mm) below the surface High frequency sensing technology Automatic Data Hold Two adjustable alarm levels with audible beeper and visual (flashing "RISK" or "WET") indicators Automatic calibration (in dry air) when meter is powered on Low battery indication, Auto Power off