firmly and to use. The long the back glues is stick, the strong the stickiness is and more firm it is Easy to use: You not need to touch it, just close the toilet the lamp function will work. When you open the toilet lid, the device immediately power close and stop working Intelligent Toilet lamp can help you use the toilet comfortably and healthily, it can protect your own health and the health of your family This product is waterproof, equipped with a wrap around silicone rings, effectively waterproof and proof molecules odors, leaving your toilet smelling freshly and cleaning