The Triplett MS100 Measures moisture content in wood (5 to 50%) and other building materials (1.5 to 33%). Low, Medium and High icons indicate moisture level and an audible indicator increases as the moisture level gets higher for quickly scanning large areas. A Lock button freezes measurement on screen for hard to see areas. For Home Inspection, Water Damage Restoration, Lumber Yards, Painting, Paper Mills, Textile, Clothing Manufacturing, and other industries. Includes protective cap, replacement pins and 9V battery. 1 year warranty