High Accuracy Measurement: Perfect for wood, lumber, logs, cardboard, paper, concrete and many types of walls. With sensitive electrode tips, the accuracy is within 2%. 4 Modes: You can switch the different modes according to 4 groups of wood, including about 50 species of wood, which makes the measurement more accurate. Useful Futions: Large LCD display with value hold function to display measurement results; auto shut-off for less battery cost (battery included). Practical Design: Made of ABS plastic for superior durability, sliding touch on both sides. Compact size and lightweight. Comes with a protective case. Wide measuring range: You can also test the building material, different building materials with different measuring ranges, such as concrete plaster walls (1, 4% -7.4%), anhydrite wall (0% -4.1%), cement plaster (0.8% -5.1%), limestone mortar (0.4% - 3.7%), brick (0.7%), % -8.0%. 5%).