"Digital humidity meterFor lumberFor cardboard, paperFor plaster, concrete and mortarAverage humidity value for European wood species at 20°CData hold functionTechnical features:Resolution: ± 1%Measuring principle: electrical resistanceElectrode: 13 mmMeasurement range: 5% - 90%Accuracy: RF ±3.0%40% - 70%: ± 2%70% - 90%: ± 4%Relative ambient humidity: 0% - 70%"