4 in 1 Pin Moisture Tester, Digital Water Tester, Wood Moisture Meter
In wood mode Green indicator block ->5%~11.9%:DRY / Yellow indicator block ->12%~15.9%:SLIGHTLY DAMP / Red indicator block ->16%~50%:EXCESSIVE DAMPNESS. In the building material mode Green indicator block ->1.5%~16.9%:DRY / Yellow indicator block ->17%~19.9%:SLIGHTLY DAMP / Red indicator block ->20% ~33%:EXCESSIVE DAMPNESS.