Deprecated E3DC sensor templates

Configuration
2

First, don’t panic. You have 6 months to get this done. Plenty of time.

There is a pinned topic about this: Deprecation of legacy template entities in 2025.12

Have a read, particularly of the first post then if you still don’t get it ask there.

There are plenty of people monitoring the topic to help.

But basically you have a few options:

  1. The simplest: use the migration script to do it all for you. The details are in that pinned topic.

Or

  1. Comment out one of your sensors. Past the repair config for the same sensor into your configuration.yaml (not your sensors.yaml!), do a config check and restart. If it all goes well then repeat for the other sensors, noting that you only need the top level template: part once in your configuration.yaml. And you only have to do the platform: template sensors. Leave the other platform type sensors where they are in your sensors.yaml file.

Or

  1. There are other options for splitting templates out into a templates.yaml file in the pinned topic.