i just want know fire alarm can notice on home assisant light can change color?
Can you provide a bit more details on this?
Is the fire alarm part of the HA system? Is it a separate system? Is it a smart system? Is it a generic smoke detector?
When you write “can notice”, are you asking if HA can detect an activity (alarming) by the fire alarm, and a specific light(s) change color?
The answer is yes, with caveats. You have to create some sort of a trigger from the fire alarm to HA, in HA. You have to create the detection capability. Once the trigger is initiated, you can run any kind of automation, including light changes.