Accurate measurement, extended range] Get an accurate reading every time. With a measuring range of 5% to 40% and an accuracy of less than 1%, you are sure to know the exact condition of your building materials, drywall, flooring or other materials. [Includes spare pins] Don't let a broken pin slow you down. Always have a reliable and working measurement with the 2 spare built-in sensor pins we've included for your convenience. Powered by one 9V battery). [Easy-to-read LCD display] With its large LCD display, the wood moisture meter will keep you up to date with its easy-to-read display. Additionally, this moisture tester is ergonomically sized allowing you to hold it in one hand to squeeze through small spaces. [Detect waterlogged wood] If you purchase wood, you must ensure that the materials are in good condition. Protect yourself by using this wood moisture meter to detect possibly waterlogged wood. [Variety of Uses] Whether you are checking the status of a construction site or considering a purchase new lumber, don't be surprised. Use this tester to locate moisture in carpets, subfloor woodworking, in the construction and agricultural industries, as well as to assess damage after flooding.Batteries not included