This is a window sensor made by Panasonic. I will send the contents shown in the first photo. Please refer to the last page for detailed instructions. It is new and unused, but I opened it once to check the contents and immediately put it back in the box. There are red numbers written on the outside of the box, but they are unrelated, so please don't worry about them. Photo attached. Please refrain from purchasing if you are sensitive to such things. - Brand: Panasonic Thank you for viewing. The packaging will be simple.