This moisture meter works with probes that indicate the moisture content in wood and building materials such as wall panels, drywall, cardboard, plaster, concrete, and mortar. Features include an acoustic alarm – the tone repetition rate increases with higher moisture levels – as well as symbols indicating low, medium, and high moisture contents. It has a compact size, a data hold function that freezes the last reading on the display, a built-in battery status check, and a measurement verification test. The automatic shut-off saves battery power.