You does your risk assessment etc etc. For some those are not a combinatorial red flag - for you it seems they are. There are a lot of things to consider and not one of us here can possibly say they've got it all covered. No one ... ever 8)
This morning my home doorbell didn't ring and a phone alarm didn't wake someone up. Two almost unrelated fails. As a result we missed an appointment which we fixed an hour or so later.
Right let's do the analysis: Doorbell is a Doorbird. I've got it running on a ethernet connection via PoE. All my home IT stuff is on UPS. I have a decent router that I know very well. I don't skimp on my home gear and I have a quite large VMware esxi which runs my home servers and stuff. I use Home Assistant which has a Doorbird integration and when you press my doorbell all my Sonos speakers say: "Ding dong, there is someone at the door".
I got it wrong: I thought that my HA box spoke directly to my Doorbird or vv. No it doesn't - it is all done via their API and that means internets.
Today I wired up a simple door chime to my Doorbird which will ring regardless of internets. The chime cost £10. The Doorbird has a chime output which isn't latching but good enough to make a chime ... chime.
This morning my home doorbell didn't ring and a phone alarm didn't wake someone up. Two almost unrelated fails. As a result we missed an appointment which we fixed an hour or so later.
Right let's do the analysis: Doorbell is a Doorbird. I've got it running on a ethernet connection via PoE. All my home IT stuff is on UPS. I have a decent router that I know very well. I don't skimp on my home gear and I have a quite large VMware esxi which runs my home servers and stuff. I use Home Assistant which has a Doorbird integration and when you press my doorbell all my Sonos speakers say: "Ding dong, there is someone at the door".
I got it wrong: I thought that my HA box spoke directly to my Doorbird or vv. No it doesn't - it is all done via their API and that means internets.
Today I wired up a simple door chime to my Doorbird which will ring regardless of internets. The chime cost £10. The Doorbird has a chime output which isn't latching but good enough to make a chime ... chime.
So that's what I do at home.