Aktobis WDH-318KC Moisture Indicator Moisture Meter with 9 V Quality Battery

Initially I thought this item was good, I bought to test if would was drying . However over time I became suspicious of the randomness of readings. Following my suspicions I tried it on things which clear contained little or no moisture, a marble work top , mirror and plastic these gave fairly high moisture readings which surprised me - however I appreciate their is not a setting for items like this . I also tried it on an obviously wet bit of wood and the reading was much lower than suspected. My overall opinion is that it’s not very good and you can’t trust it . It seems extremely random - I wish I had bought a better one .

Every wall is 100% damp not great all all and every reading is bad even a hot dry radiator is wet so not good nor even come close to being exceptional for the work we need it for.