Features Measured by high-frequency electromagnetic wave induction, digital LCD screen: the humidity is clearly displayed. Support upper limit setting and over limit indication, automatic compensation of ambient temperature. Wide measurement range of 4%~80% RH and high accuracy of 0.5%. Provide 10 grades of wood density, suitable for various wood measurements. Suitable for measuring the moisture content of bamboo and wood products, cotton, paper, herbal medicine, etc. Features: -Measured by high-frequency electromagnetic wave induction, digital LCD screen: the humidity is clearly displayed. -Support upper limit setting and over limit indication, automatic compensation of ambient temperature. -Wide measurement range of 4%~80% RH and high accuracy of 0.5%. -Provide 10 grades of wood density, suitable for various wood measurements. -Suitable for measuring the moisture content of bamboo and wood products, cotton, paper, herbal medicine, 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   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.   Package List