Inductive measurement,no harm on the measured surface. Convenient and fast. Measurement though HF electromagnetic sensing Super largedetection area. 10 different timber density at option. Automatic temperature compensation for moisture measurement. Setting of upper limit of moisture content , promting of overrunning Wood density . Ultra- LCD display ensuring clear readings with backlight. Data hold function. Battery level indication. Auto power-off function. Moisture measurement range: 4%~80% Measurement error:(1%RH+0.5) Resolution: 0.5% Enviroment: Temperature: -10~60C Humidity: 0~70%RH Power supply: 3x1.5V AAA battery (not included) Material: plastic colour: blue Package Contents: 1 x Moisture meter Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.