I have 100 blue series switches configured with ZHA in Home Assistant. One of the most painstaking things I have experienced is setting up all the switches to use the same configuration. It is extremely tedious and time-consuming. It keeps me from trying things and making changes to my network because I like things to be consistent.
To solve this problem, I wrote a Home Assistant developer tool that will sync 1-to-N settings across your ZHA Network. Basically, you can select a Source Switch, then choose the settings you want to sync, then sync all of those settings across all of your switches. I also made it so you can select a target and destination switches if you only want to update certain switches. This has been amazing and has helped me so much; I decided to open-source it.
You can learn how to install it here:
Here is a screenshot
