Product description: About products: Air Switch Kit is connection device as a part of garbage disposal, massage chair.It has four color and two different lengths switch button, you can be free to choose one you need.The outstanding point -- the material of our power box is aluminum alloy which is more durabel than other plastic ones on the market.<br> Next are the problems you may meet:<br> Qusetion 1:Why the air switch can not work or do not work well?<b><br> Answer 1 : A. Please check the two connection between air tube with power box and air tube with air switch button. B. PLease check the power of your machine.If the power of your machine is beyond 1HP, it is impossible for the air switch kit to work well.And the recommend power of machines is about 3/4 HP or 560w. <br>Note:<b> Once you have any problems after receiving products, please be free to contact us with e-mail.