Material: Wood Moisture Tester All parts of this humidity tester are made of high-quality environmentally friendly materials, which are durable and sturdy. [Design]: Easy red LCD screen design, automatic shutdown after 2 minutes of no operation, more convenient to use. [Use]: Equipped with 2 needles, it can test the moisture of wooden materials, such as beech, spruce, oak, cherry wood, walnut, etc., with a measurement range of 6%-44%. [Performance]: You can also test building materials. Different building materials have different measurement ranges, such as concrete gypsum walls (1.4%-7.4%), anhydrite walls (0%-4.1%), cement plaster ( 0.8%-5.1%), lime mortar (0.4%-3.7%), brick (0%-8.5%) Features: The wood moisture tester has low power consumption and requires 1 x 9V 6F22 battery.