Ring products are based on a simple principle - use your existing home wifi network to create a ring of security around your home. By hooking up to your wifi Ring products use the free Ring app (available for Apple and Android devices) to alert you whenever someone approaches your door or comes in a range of a security camera. You can then view an HD video stream of the person and speak to them using two-way audio communication. The free Ring app also allows you to control all the other functions of your Ring devices such as floodlights and sirens and video recording. Put simply, with Ring products, you're always home.