How to change the LED color when the temperature goes up and the alarm goes off

Please export your flow and paste it to a reply so we can see what you are doing.

In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)

``` 
   code goes here 
```

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See this post for more details - How to share code or flow json