Because there is no fence enclosure around the building, we installed a security device. For this reason, a warning to the surroundings who is approaching suspiciously is necessary.
I bought it for crime prevention purpose. Although it does not say this price if it is 5 pieces entering, it seems that it was a little hard to tension because the material was stretched nylon rather than an ordinary sticker. I think that it will be OK if you get used to it.