Breaking the Glassplate in a SImplex 4251-30 

CarterPlays Official it’s because some panels have verification to make sure the alarm is really activated

No, but they are cheap

@@FireAlarmsandSuch Yeah, even the newer glass panes that just say "BREAK GLASS" often found with the newer 2099/4099 break-glass pulls will work just fine in 4251-30s. I've seen quite a few instances of that in real life; I think at least one of the 4251-30s at my first elementary school is currently set up that way.

@@FireAlarmsandSuch let's hope the newer ones break easier

@@theonewhoisfelonious8211, they do.

​@@FireAlarmsandSuchDude, you gotta slam the handle really hard as you can.

and the early 80s too. At wem they have these as 4251-50 (two-stage) and it was built in 1981.

@@albertafirealarms2338 I know in the late 70s they changed the type face a bit, looking a tad more "modern." Then around the mid-80s they went with the current Arial/Helvetica typeface that's still used today (although now they just read "BREAK GLASS.")

@@ZakWolf those break-glass ones are rare in Alberta. I think the new dual action is PUSH PULL DOWN

Have you seen the 4251-50? It is the two-stage version

@@albertafirealarms2338 Yeah, I saw one at the Boston Park Plaza hotel in Cambridge MA. It had the break-glass frame and hammer removed, but I could still tell by the holes and peg above the lever, and I could see the key switch behind the lever as well. (The hotel has a huge Simplex 4100ES multi-level voice-evac system; the rest of the pulls are mostly addressable single-action 2099-9795s and dual-action 4099-9006s.)

Eric Mills

@@FireAlarmDude5967 No it is not supposed to, he even mentioned that is not meant to fall.

@@FireAlarmDude5967 And you wrong!

@@FireAlarmDude5967 Yeah, it's a pretty cool design those older Simplex break-glass pulls utilized, so you don't have to worry about broken glass shards when pulling the lever.

Yeah, that was the lettering style from the early to mid-70s. For this video I would've replaced it with a newer glass pane to break, the kind that just says "BREAK GLASS." (In virtually any system I've seen with 4251-30 pulls using that glass lettering style, there's at least one with replacement glass.)

you should have not broken it

Yeah, that was the lettering style from the early to mid-70s. Though in virtually any system I've seen with 4251-30 pulls using that glass lettering style, there's at least one with replacement glass (in many cases, the newer glass pane that just says "BREAK GLASS.")

@@ZakWolf Yeah. I thought they stopped making it in 1990 because I have seen the newer 4251-30s have it too. Mine came with that style and I took it out and got it out in 1 piece.

@@ZakWolf like the ones that have the handle grip and not the flat handle like I have.

@@firealarmtechguy4444, I know they continued to say "BREAK GLASS PULL HANDLE DOWN" up until around the early-to-mid 90s, even after they introduced the "newer" 2099 break-glass pulls, before later switching to just reading "BREAK GLASS." But like I said, those newer glass panes work just fine in the older 4251-30 pulls.

I agree. Even the newer glass panes designed for the newer Simplex break-glass pulls (the ones that just say "BREAK GLASS") work just fine in the older 4251-30 -style pulls. In fact, lately in nearly every system I've seen with 4251-30s there's always at least one with a newer glass pane like that.

Fire alarms are not annoying!

Thebrightestbrick88 Yes

"Reeeeeeee!" The fire alarms in my school.