So recently the Stockton Fire Department shared a post on Facebook about a fire in the Downtown area. When they were entering the apartment building, at the 31 second mark, you can hear the fire alarm notification device.
The thing is, it is not March Time, Code 3, nor is it slow whoop.
Here’s the video from YouTube from Stockton Fire. Any idea what the temporal pattern is and possibly the make? https://www.youtube.com/watch?v=DJRqsv0zelI