Product Description: Quantity: one set Choice of 4 wood species and other materials. Measurement range: 0% to 80% wood. Precision; +- 2% wood species Operating temperature: 0-40C Working humidity: 20% to 90% Auto power off time: approximately 10 minutes Probe length: 9.8 mm Other materials can be measured: anhydrite, cement mortar, lime mortar, brick. Anhydrite measuring range: 0-11.0%, cement mortar: 0%-8.6%, Lime Mortar: 0%-9.9%, brick: 0%-16.5% Batteries: 2 x 1.5V batteries (not included) Handheld Digital Moisture MeterThis instrument is a smart needle-type contact wood moisture meter. It can measure the moisture content of 4 types of wood and other materials. This information can be used to determine if the material is ready for use, accidentally wet or dry, or requires further inspection. Backlit LCD DisplayBacklit LCD display, clear readings, convenient for use in dark environments; Auto-off time after about 10 minutes of inactivity. Easy to UseThis moisture tester has an ergonomic size, you can hold it with one hand to squeeze into a small space . Friendly Tips9.8mm probe, moisture meter with protective case; due to manual measurement, the error range is very small.