 Before using Audio Link, you have to pair it with your audio processor. First, switch on Audio Link by pressing the main button for two seconds. The light will indicate it is on. Place the coil over the center of the keypad. Switch off the processor and then back on. When it's successfully paired, the left and right connection symbols will light up. If you are a bilateral user, make sure you pair both your audio processors one after the other using the same procedure as before.