Features 1、[Small Error] The sensitive electrode needle is used to measure wood, the measurement range is 0‑99.9%, and the error range is less than ± 0.5% 2、[More Accurate Measurement] Can switch different modes according to 4 wood groups, including about 50 kinds of wood, so as to make the measurement more accurate 3、[Scope of Application] Digital hygrometer is very suitable for wood, firewood, firewood, cardboard, paper, etc 4、[HD LCD] Large HD LCD has data saving function and can display measurement results 5、[Ergonomic] Automatic shutdown to save battery power (excluding battery). The low battery icon is displayed. Ergonomic design provides excellent hand feel Specification Item Type: Digital Wood Hygrometer Material: ABS Purpose: Humidity Tester Color: Black Measurement Range: 0-99.9% RH (℃) Resolution: 0.1% Error: ± 0.5% Electrode Length: Approx. 10mm / 0.4in Automatic Shutdown Time: 15 Minutes Applicable Battery: 9V Lithium Battery (Shipped Without Battery) Operating Temperature: 0-40 ℃ Package List 1 x Digital Wood Hygrometer 1 x English User Manual