[Scenario]

Well, that object is an always-on object- so, when you create it, it's going to "flash." However, depending on the time of day (in the server), you may not be able to see it very well.

And siren noises, that's a little different. Basically, you're going to use this function to play an audio stream- but that's a bit more advanced and I doubt you'll be able to do it. I could, but I don't have time right now.