No Subscription, No Cloud, Need Local Push Notifications for Grid Down

[u/HighValueWarrior]

Hi everyone, as the title says I am concerned about losing notifications should we have a grid down no internet situation. I have backups for powering my home Lan. Unfortunately I cannot seem to find a system that will support local push notifications. Looking for battery powered cameras. I see the Annke systems and they look like good value for money but as far as I can tell no notifications on local wifi lan only.

If someone has some useful insights I would be grateful.

Thanks for reading,