Feature:1. Probe: Equipped with a probe, the moisture meter is designed to measure the moisture content of most woods, bamboos, papers, cardboards, walls according to different preferences to meet personalized needs.2 . 4 groups of wood: In wood mode, the wood moisture detector has 4 groups of measured wood (with approximately 50 species of wood) to select from, allowing you to take accurate measurements of the moisture in the different types of wood. wood.3. 3-in-1 Modes: With 3 modes, i.e. wood mode, paper mode, wall mode, the moisture meter can measure different items according to different conditions. > 4. Data Hold: You can lock the measured data to easily check and record the humidity, the function is very convenient and practical.5. Auto Power Off: When you have no button operation within 5 minutes, the digital humidity sensor will automatically shut down, saving energy and extending service life.Specification:Item Type: Moisture MeterMaterial: ABSWeight: 140g/4.94ozColor: As ShownSize: approx. 144x64x31mm/5.67x2.52x1.22inDisplay Screen: Backlit GreenPrinciple: Resistance TypeWood Range: 4~75% Paper Range: 4 ~ 90%Wall Range: 0.2 ~24%Resolution: 0.1% Accuracy: 0.5%Electrode length: 10 mm (0.4 in)Auto power off: No operation within 5 minutes Power: 1.5V AAA BatteryOperating temperature: 0 to 40 degrees Celsius (32 to 104 degrees Fahrenheit)Temperature range: -20 to 70 degrees CelsiusInstructions:Measurement Instructions:1. Remove the battery cover, install two number 7 dry cell batteries and press the button once