The meter has been specifically calibrated for use with drywall, masonry, hardwood, and softwood. Easily switch between the four materials using the two toggle buttons on the front panel. Use this noninvasive moisture meter to detect moisture up to 3/4" (1.9 cm) below the surface of masonry, wood, drywall, and concrete. An audible out-of-range alarm alerts you when the tested wood is above 17% in moisture content or masonry is found to be more than 70% wet. Features data Hold, low-battery indicator, and auto power-off. Colored LEDs provide rough readings of the measured value in a bar graph format, with green indicating "dry", yellow indicating "intermediate", and red indicating "wet". 

• Separate settings for drywall, masonry, softwood, and hardwood.

• Large backlit LCD plus 3-color bar graph lets you view results two ways.

• Ideal for building inspectors, woodworkers, and water damage remediators..