Most IP cameras and doorbells work with a bridge. For example, the eufy HomeBase or the Tapo H200. You can connect such a smart hub to your router. After this, you can connect it to your doorbell or camera via the accompanying app on your smartphone. You can store your recordings on the hub. This way, you can securely store this footage locally without needing an extra subscription. You can also use it as chime for your doorbell. When someone rings the bell, it makes a sound out loud.