The Extech MO210 moisture meter is a self-contained, pocket-sized meter. The large dual graphical LCD displays the moisture content in wood and other building materials. The Extech MO210 moisture meter can be used on wall board, sheet rock, cardboard, plaster, concrete, and mortar. The Extech MO210 moisture meter has replaceable threaded measurement electrode pins and impact-proof housing. The Auto power off feature conserves battery energy. The Extech MO210 moisture meter also offers a built-in battery check and measurement verification test.