1.Easy to use:just peel off the back and apply on flat surface. 2.Bright red color stickers are eye-catching,that can be read from the distance. 3.Material:Made from durable waterprrof vinyl with permanent adhesive,can be use indoor or outdoor. 4.These emergency switch sign clearly indicating the location of shut-off switches. 5.Size:Each sticker measures 10x7 Inch,8 Pcs Per Pack.