1.*Please do not install the suction cup on any floor surface with gaps.

2.Please wipe the suction cup and floor before installation to keep them clean.

3.Please press the suction cup hard to make the surface of the suction cup fully contact with the floor, and then press the switch.

4.When you feel obvious and strong resistance from the switch, it proves that you are about to install successfully.

5.On the contrary, if you press the switch easily, it proves that the installation has failed.

6.*Please inflate the balloon until the wrinkles on its edge are completely smoothed out.