The MO55 is a combination pin/pinless moisture meter. Take quick moisture measurements on wood and building materials with choice of pin or pinless (non-invasive) Method. Easy-to-operate with display icons that indicate the levels of moisture content Plus audible alert feature. Ideal for building restoration projects and applications where moisture detection on floors, tiles and under carpets is critical. A Must-Have tool for analyzing the after-effects of water leakage behind walls and in ceilings. Complete with pins (2), protective cap, and 9V battery.