The Extech MO260 Moisture Meter is a portable, battery-powered wood moisture meter that measures moisture in wood and other materials such as particle board, carpeting, and ceiling/bathroom tiles. The meter uses a non-invasive method (pinless) to detect moisture in wood and a pin method to detect moisture in drywall and other building materials. The meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.