Accurate Measurement: ±2.0%, the hygrometer has 2 modes, measuring both wood and building materials. The moisture detector is equipped with 7 calibrated scales that measure different types of materials. High-Sensitivity Metal Probe: 2 highly sensitive metal-tipped needles can penetrate the wood to ensure maximum precision in moisture measurement. Accurate Measurement, Low Error: There are 4 wood levels (the maximum moisture content range of wood materials is 6-70%) and 3 building materials levels (the maximum measurement range of building materials is 0%-15.2%), meaning the measurement range is 7 types. The wood moisture meter is equipped with 2 high-precision needles that easily penetrate the test area and quickly provide the moisture content at the measurement point. Professional Meters: Accuracy: ±2.0%. Resolution: 0.10%. Temperature measurement range: 0℃~50℃. Ambient humidity: 20%RH~90%RH. Working environment humidity range: 0℃~40℃. Temperature unit setting: Long press the "SET"