Visitors press the button next to the name of the provider and a light tells them you've arrived. The doctor / therapist / office manager presses the other button and turns off the light. It works like a 3-way switch for the top and bottom of lights at your stairs. Our system simplifies visits and adds flair to your business. There's nothing else quite like it. Check the [Products] tab to see what's new, and [Accessories] for offices with break rooms or meeting rooms. Thanks for shopping, so visit our website and see the front page for a discount.