ELK-100 Siren Driver

Just a little warning, this is loud, like most sirens. Be mindful of that around the 0:58 mark.
A little demo of my Elk Products ELK-100 siren driver. As stated, the added switch changes the rate of the yelp tone. It was put there because cutting a jumper is rather permanent.

[@NyxKemo]

Both the siren tones were creepy imo