It's a Simplex 4903-9101 Strobe Plate with a 2901-9838 horn in continuous. Loud!

1:26 The telecor emergency tone.

The top looks like smoke

Also the 4903-9838 should've been in the hallways. That could have scared tf outta me if it was in the room

Nice to see 9838s still serving today

8:45 all clear

Wow that 9838 is extremely loud!

Reminds me of my pre-K years our Christian school had that exact alarm in all the class rooms on 2903 light plates it was about a 15 classroom building so the big space had 4 of them in there and the kitchen had one and they where all on continuous it was loud

simplex 4903s

2:15 on .25 speed is awesome

I'm making cheetah the hero and Nathan stern and the return of evil lizard coming out on May 1st 2025 I'm turning 22 Years old next May of next year and next year it's my final year in high school 🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉😂 I'm graduating next April of next year

I also hear truealerts on continuous

@raccoon alarms 4903s