A variety of sizes, a variety of materials, suitable for most families Five colors for a variety of kitchen color schemes. Matte Black ,Oil Rubbed BronzeChrome Champagne BronzeBrushed Nickel Poewer Module Used to connect the air switch button with the garbage disposer.The maximum power supported is 2hp.Electrical Rating: 10A, 125V AC. Simple and Elegant Design Concealed gasket design, integrated with counter top /sink topThree-dimensional button shape Installation - Reverse Locking After the nuts are tightened, tighten the screws on both sides upwards. Drain Hole All buttons have drain holes. Effectively prevent water entering the air tube and buttons. Button installation Install the buttons and accessories directly into the standard sink hole. Button mounting portion of the length of 1.34 inches.In the order shown, Button--Sink Top/Counter Top--Rubber Gasket--Metal Gasket--Screw Nut.Tighten the plastic nut to ensure a seal. Tips: Drill a hole with diameter not narrower than 1-3/8 inches. Air Tube installation Pass the air tube through the nut.Then connect the nozzle of the air tube to the protrusion.Push in forward. General diagram Install air switch button on sink top.Use air tube to connect air switch button and power module.Connect the power cord of the garbage disposal to the power module.Connect the power cord of the air switch set to the wall socket. Tips: Gently press the air switch button to start the garbage disposal, press again to turn it off.