Bosch GMP2-15 Wood Moisture Meter Hygrometer LCD Brick Timber Damp Detector IP65
Dust and Water Protection: IP65. When relative humidity is 5% – 90%,the accuracy is ±3% RH (5% to 90% RH – ±3% RH);. When relative humidity is 91% – 95%,the accuracy is ±5% RH (91% to 95% RH – ±5% RH).