![[DEFUNCT] Fire Alarm Test #111 | Simplex 4020](https://i.ytimg.com/vi/drhSUrmRE5U/mqdefault.jpg)
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Last Updated: September 30, 2026
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Well look at this it's going to be a This is a short clip of a fire alarm Shoutout to for setting up the programmer. 0:00 - Intro 0:40 - Demo Setup 2:27 - Walk After years and years of owning these big Unsynchronized strobe light show at the end of a VERY long inspection - 6 floor building, including 1950s-era falllout shelter with ... In this video I show you how to check the sensitivity of smoke detectors on a Alarms: 2903-9101/2901-9838 horn strobes 4903-9105/4901-9805 horn strobes and a couple TrueAlerts and a 4903-9252. This is one of the older systems in this school district. It is a
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