To fix the Reolink 5MP doorbell disconnecting when there is no Internet, connect the device to a network with Internet to complete the initial configuration. Then, assign a static IP address to the device through the router and use a firewall or router settings to block outbound Internet access, but still allow LAN connection to the NVR. This way, the device maintains an internal connection without Internet access, ensuring privacy and stable operation in the local network system.

Reducing from 5MP to 4MP or 3MP, and reducing FPS from 25 to 15 can save a lot of space. tunnel rush