Item Type: Moisture Detector Material: Plastic Humidity Measurement Range: 0-99.9% Accuracy: 0.5% Display Resolution: 0.1% Battery: 9V Battery(Not included) Size: Approx. 14.3 x 6.5 x 3.5cm / 5.6 x 2.6 x 1.4in Weight: Approx. 130g / 4.6oz Usage: 1. Remove instrument probe protection cover. 2. Press the on-off key to start. 3. Press the Mode key to select the corresponding type of wood to be tested. 4. Insert the probe into the object to be measured, and the screen displays the watercontent of the object to be measured. 5. Press on-off key to shut down. Maintenance and Repair: When this meter is not in use, it should be stored in a dust-free/shady dry environment. If it is not used for a long time, please take out the battery to avoid battery leakage damage to the meter. Battery Replacement: When the meter screen displays a low voltage indicator of the battery, it indicates that the battery is nearly exhausted and a new battery should be replaced immediately. 1. Remove the battery cover on the back of the meter. 2. Replace with a new 9V battery. 3. Put the battery cover on.