I decided to get deeper.
https://www.youtube.com/watch?v=cp3QfdC_4fc I can confirm this is a esp maestro. A siren produced in the czech republic. But wait. You can hear modulators or ati’s so we can probably confirm they could use modulators or ati’s.
https://www.youtube.com/watch?v=1IWPGZ8GuFs&t=42s Found out that the channel who made the video i linked here is fake. If you skip to 2:30 in this one you can see that its just some cardboard smothered in black tape with some cheap pvc pipes connecting to them with some string acting as wires that would connect to the control box and power the speakers with some synthesized mp3 audio playing in the background. Which gives me some suspicion the channel who made the video i linked is some channel who i would consider a kiddie if they were here who spreads fake information. In the last video it just looks like some stolen video that got badly edited into the video. Sorry for the misinformation i linked. Also heres another video that proves the channel i linked videos from is fake
https://www.youtube.com/watch?v=bziBs-6B8vE This is just obvious, It was stolen audio from someone elses video. FYI this one
https://www.youtube.com/watch?v=-K7o0i3HWZ0&t=111s And idek why anyone would think this is real, Its just some bad quality copyrighted image off of google with a badly edited siren.