I'm selling this because I received it but haven't used it. The plastic on the front has not been peeled off. I don't know what the person who gave it to me was keeping, but the surface of the cover on the tip is a little jagged. They said they were using it without any problems. Please understand that this is a used item. How about using it for temperature and humidity control when keeping reptiles, such as with a "Dantotsu" heater? There is no instruction manual, so please download it from the internet.