Product advantages: 4 probes, more accurate testing, can quickly determine the moisture content of wood, large display, can keep current test data for reading after testing, easy to carry with a wrist strap and tool bag. Product technical data: Measurement range: 5% ~ 40% Resolution: 1% General product features: Introduction 1 Remove the probe cap, press the power button to turn on, 2. During the test, insert the probe into the measured object about 5mm and the screen will display the moisture content of the measured object. 3 If you need to keep the current value, you can press the hold key "H", 4 After the measurement is finished, please press the power button to turn off and cover the probe cap. Maintenance instruments 1 This instrument is high impedance and with safe isolation, in order to ensure its accuracy, please keep it dry and clean during storage and use 2 When LCD display shows low voltage symbol, please replace the battery. When you do not use it for a long time, you should remove the battery to prevent leakage from damaging the instrument. Power supply: 6F22 type 9V battery (no battery) p> Product size: 129x63x32mm Product weight: about 76g Note: The data is manual measurement, please allow 1-3cm error, due to differences between the light and screen, there will be a certain color difference, the specific received in kind shall prevail.