HOBBY - Digital thermometer for aquarium

Why is my digital thermometer (item number 60495) no longer working?

In almost all complaint cases examined by us, after opening the sealing cover on the back, we have noticed the presence of water in the housing and / or oxidation of the battery. After drying for four days with the lid open and changing the battery, the thermometers worked perfectly again. When replacing the battery, it is therefore essential to ensure that the sealing cover is tightened securely.