The recent advancements in cmos camera sensor technology have allowed great reductions in pricing for megapixel IP cameras, thus enabling the average consumer to afford high definition video. At the same time, prices for wireless access points have become affordable and WiFi radio technology has become more reliable. Gone are the days of access points over heating, and intermittent data streaming because of issues with poor RandD from the factory. As of 2015, it is affordable to combine a IP camera with a access point and make the camera wireless. You can use any ip based network camera and use either a 2. 4GHz or 5. 8GHz analog or digital wireless signals. They are home consumer cameras and very limited in their transmission range, resolution, and other capabilities like bandwidth control which allow optimization of the video feed to reach longer distances. The camera sends video, audio, data over WiFi to the AP, then the AP sends the signal to your network router via the network cable attached to it. Once the data reaches your router it can be sent to your NVR, computer, or even be accessed over WiFi from a mobile device or laptop; the router is basically acting as another relay for sending the video signal to other devices on the network. If you use a NVR, you can even record the camera feed on it along with wired IP cameras.