I should note that this audio is altered. I missed half of the first whoop signal because they tested 15 minutes early. I was able to salvage the audio to make it sound complete. Because of this, I was also unable to get a good video, so this recording is audio only.
About a decade ago, when Tooele county removed half of their system, they donated a few units to Woodland Hills in neighboring Utah County. They use a similar testing pattern to Tooele County, except with a Utah county voice message, and a 3 minute test duration. Woodland Hills uses these sirens for forest fires, and tests them on the first Saturday of the month at (what should be) noon.