Hi Joe, to allow 2 3 outdoor cameras to store locally to a NVR without eating up you bandwidth, you have two best options available. One is the wireless security system, like Reolink RLK4 210WB4 with 1080p high definition /product/rlk4 210wb4/, which frees you from messy cablings. Or you can choose a PoE security system with easy set up, such as Reolink RLK8 410B4 /product/rlk8 410b4/. Both options release you from the worries about using your bandwidth. The NVR and the cameras can automatically connect to each other on its own proprietary network and start to communicate with each other without consuming your data. You can get 24/7 recordings stored in the NVR to review at your convenience. If you occasionally need to watch live view remotely via your phone, then you need to connect the system to your router. We provide 3 playing modes for you to watch the live videos. You can choose based on your needs and your network speed. Besides, a surveillance sign is included in the product package. Put it up on the wall or the bracket so that everyone knows you have installed a security system and the potential burglars are scared off.