Digital LCD Wood Moisture Meter Humidity Tester MD814 Handheld with with 4 PIN Overview:It is a great moisture meter to detect damp, rotting wood or wet walls when you inspect your home. It is especially useful when you plan to buy a foreclosed home. It will help you to find moisture in wood, in plaster or drywall walls and also in or under carpet. Feature:* Digital large size LCD display with 4pcs test probe pins * Range:5% to 40% * Resolution:1% * High resolution and response quickly * Date hold * Symbol and unit display can read the value convenience * Low Battery Indication * Power:one 9V 6F22 battery (not included) * Dimension:1306332mm * Weigh:approx. 116g * Operating temperature:0 C to 40 C (32 F to 104 F) 0 to 70%RH Attentions:1. The pins are very sharp and don't let children play. 2. Don't point pins at humans or animal to avoid the injury others when using it. 3. The instrument is high resistance and well insulator. Keep it dry and clean so as to insure the accuracy of measure when store and using it. 4. When the sign "- + " is displayed on the screen, it indicates that the battery voltage is low, please replace it with a new one. 5. Removed the battery if don't use it for a long time. 6. It has a large impact on wood moisture in some conditions, such as Special wood, different temperature, the wood growing up in different place. The simple moisture meter is just based on one kind of wood, and it has not the correction function on Special wood, different temperature, the wood growing up in different place. So the different meter will have the different measuring value. Package Include:1 x MD814 meter; 1 x blue bag; 1 x manual; 2 x spare pin (Note:it is very Sharp, please pay attention when using, and don't let Children play them)