Features ACCURATE & QUICK MEASURING - FIND WATER LEAKS IN SURFACES. Designed with 2 high precision pins, penetrating into the test surface and quickly know the moisture level, give you an estimate of the potential for moisture growth throughout your home. The damp meter is the best way to identify the location of moisture buildup. Accurate Measures - Wide measurement range from 4% to 80% RH and high accuracy of 0.5%. Various Wood Measurement - Provide 10 grades of wood material density for various wood measurement. Measure Moisture Level, Spot Damage - Moisture meter is great tool for homeowners, woodworkers, floor installers and inspectors. Homeowners and Professionals rely on moisture meters to identify different problems, which would save potential expensive repairs. Packed for Convenient - Moisture meter comes with a water resistant carry pouch. A "Wood Type Quick-Search Index Table" printed on back of the device, help adjust setup quick-and-easy. This item is a precision instrument, which adopts HF electromagnetic waves to measure the water content without damaging the object under test. Its density grade can be set according different material to increase its measurement accuracy.   Features: 1. Measurement through HF electromagnetic waves sensing. 2. Accurate Measures - Wide measurement range from 4% to 80% RH and high accuracy of 0.5%. 3. Various Wood Measurement - Provide 10 grades of wood material density for various wood measurement. 4. Support upper limit setting and overrunning indication. 5. Digital LCD Screen: For clear humidity display. 6. Automatic compensation for environmental temperature. 7. Suitable for measuring water content of bamboo or wood products, cotton, paper, herbal medicines, etc.   Specification: Model: MD918 Moisture Measurement Range: 4%~80% RH Accuracy: 0.5% Power Supply: 3*1.5V AAA Alkaline Batteries ( NOT included ) Color: Blue Size (L*W): 13*6.8cm / 5.12*2.68in Weight: Approx. 170g/6.0oz   Package list: 1 * Moisture Meter 1 * Hand Bag   Note: 1. Due to the difference between monitors and light effect, the pictures may not reflect  the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding. Package List