4475GM  

To detect humidity in walls, bricks, floors, concrete, plasterboard, wallpapers, woods, etc.
No.2 measuring electrodes and safety cap.
In sturdy synthetic material.
Detector with large LCD display (resolution 0.1%) and acoustic signal (disconnectable).
HOLD function for measuring even in hard-to-reach places.
Automatic switch-off after ca. 3 minutes since latest measuring. Low battery indicator. Field of measurement: 5% to 50% for wood and 1,5% to 33% for building materials.
Power supply: 1 alkaline 9 V battery, not included (see Art. 3600 M).