I had the equipment purchased primarily for being able to measure the humidity in my shell terrarium can. I have read several times in a forum that the device should be very sensitive to water inconveniently, so I made sure that it is not sprayed directly. It could be read very bad from the beginning and always showed the wrong values - even after repeated spraying unfortunately changed nothing on the display for the humidity. Since I was there still a beginner and an increasing number of water have nachgesprüht so that the values are finally ideal, I could wring the substrate at the end - with alleged 30 percent humidity. After a few days the unit has then completely given up the ghost, and I sent it back.