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 Meter Material: ABS Weight: 140g/4.94oz Color: As Shown Size: approx. 144x64x31mm/5.67x2.52x1.22in Display Screen: Backlit Green Principle: Resistance Type Wood Range: 4~75%< /p> 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 < p>Power: 1.5V AAA Battery Operating temperature: 0 to 40 degrees Celsius (32 to 104 degrees Fahrenheit) Temperature range: -20 to 70 degrees Celsius Instructions: Measurement Instructions: 1. Remove the battery cover, install two number 7 dry cell batteries and press the button once