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. Do remember that when you are prepared, you prevent. Hi Joseph, thank you for your kind words. By the way, if you want a more environmental friendly option, you may check out the 2nd generation of Reolink Argus – Reolink Argus 2, a rechargeable battery operated security camera which can also be powered by the Reolink Solar Panel requires a separate purchase.