Domoticz monitoring in camper van outside EU : data management and esim profile ?

[Tukker]

My first thoughts are about why you're so keen on being connected and receiving alerts while you're abroad.
Close the door behind you and enjoy freedom, freedom in your mind in the first place.

Practical solution: install pivpv for a safe connection from everywhere.
The combination PiHole (install that first) and PiVPN gives you a secure internet connection on every network plus a safe entry into your home network and your RPI.
Using the obsolete Domoticz app you can receive all alerts.
Other option is to do some dzVents Magic and receive alerts using Telegram or setup mail and have your RPI send mails.

[waltervl]

I use telegram to stay connected to my home. I get notifications and steer my devices. I use the python version but there is also a lua/ docker version.

You only have to setup a telegram bot, install the scripts and you are connected worldwide.

See wiki https://wiki.domoticz.com/Remote_Contro ... legram_Bot

[lost]

On the practical side, I wonder if this kind of connection remains stable when driving through more isolated areas...

For such kind of monitoring, if typical use-case is a few km away, you may consider mobile network free alternatives like Lora (Mesh or P2P). not as easy as a smartphone as you would need specific radio in the van and another handheld device (some exists, but just a smartphone peripheral able to interface a Lora radio through BT or USB, not sure)... No mobile network needed thus no fee as well, but would be pure DIY even if SW building bricks exists.

[waltervl]

I use telegram to stay connected to my home. I get notifications and steer my devices. I use the python version but there is also a lua/ docker version.

You only have to setup a telegram bot, install the scripts and you are connected worldwide.

See wiki https://wiki.domoticz.com/Remote_Contro ... legram_Bot

Thanks waltervl, that sounds great! Using a Telegram bot seems like a really smart and lightweight way to get notifications without heavy data usage.
I will check the wiki page you shared. Does Telegram handle brief connection losses smoothly when moving between different network coverage areas, or do you have to manage offline queues in your Python scripts ?

In my script there is one issue that the server looses connection to the Telegram bot after some hours of inactivity. But it will come back online within a minute. So sometimes I have to type the command to find or set a switch in my telegram app 2 times. But it never failed me as long as my phone has internet connection (3G/4G/5G). It even can send camera snapshots etc. See the screenshots in https://github.com/waltervl/dynamicTelegramBot
There is no need for stable internet connection on your phone. If you have internet on your location you can connect. If there is no internet then you cannot connect but nothing goes wrong.