I know, that’s why I bet this is an adressable system. They probably upgraded the pulls to addressable, but haven’t gotten to the alarms yet.
I remember once at a rest stop I saw 4251-20s (looked like they were probably 70s) and 4903 horn/strobes.
Same here. The Brockton Day Nursery here has 4251-30 pulls in the original 1978 wing, while the 1983 wing has 4251-20s. The alarms are Simplex TrueAlert horn/strobes, looking like they were replacing 4051+4050-80s (in the 1978 wing) and 2903 alarms (in the 1983 wing).
Here is a recap of the alarms at my synagogue:
Recently, the sanctuary was renovated, so I have updated info.
Annunciator: Bosch Radionics Annunciator
Pulls: Fire-Lite BG-10s with some BG-12s with stoppers over them.
Alarms: SpectrAlert Classic horn/strobes
Info on the old system:
The synagogue is from the late 50s or early 60s. The original alarms were Edwards Adaptahorns and most likely 270-SPOs. My family joined this synagogue four years ago, so I never saw the old system active. I bet, when the foyer was renovated, which it looks like it was in the late 90s, the SpectrAlerts and BG-10s were put in. They forgot to take an old alarm down in the sanctuary, so for awhile, an Adaptahorn was still there, even though there were SpectrAlerts too. There are no remains of old alarms in the foyer as that area was renovated and most likely the old alarms were patched over. However, the classroom wing was not as fully renovated, and remains of the old alarms are still there. There is one on each floor. A square with wires cupped together inside. I saw it said “Edwards” on the label inside the backbox. This is proof that the old alarms were Adaptahorns. Also, I noticed an outlet cover mounted at a non-ADA level that I bet replaced a 270-SPO, although it’s not below the Adaptahorn remains. Since System Sensor did the upgrade, they did not bother covering the old alarm remains, and even left an Adaptahorn up in the sanctuary for awhile.
Updates since the renovated sanctuary:
There used to be a SpectrAlert Classic on the outside of the synagogue right by the sanctuary, which was taken down. Also, there were 3 SpectrAlert classics and a leftover Adaptahorn in the old sanctuary. The new sanctuary has SpectrAlert Classics! I bet they chose to save money by reusing the SpectrAlerts. They are ADA compliant and are good for awhile. Also, there is a BG-12 in the sanctuary now, but they forgot to put a stopper over it. Also, finally, the old Adaptahorn was taken down and fully patched over. I was almost certain they’d do this as it was already disconnected. And the construction workers almost certainly do better install jobs than System Sensor does! However, on the outside, they put up a new SpectrAlert Advanced in another location.
Class Change Bells:
They use Wheelock 6 inch bells behind grilles for the religious school. The grilles are old, so I bet there used to be Adaptabells. Downstairs in the basement, the bell is surface mounted, so there probably was no bell before. These bells can be hand rung, but are also rung automatically.
A club/lounge that I went to had an interesting mix of alarms. The pulls were a mix of BG-10’s and BG-12’s with one lone BG-6 by the front entrance. The signals were mostly SpectrAlert classics installed on older-looking flush mount plates. There was also one 7002T; those were probably the original NA’s. There was a white Silent Knight annunciator by the front door.
A movie theater I went to had a Simplex 2001 system. The panel looked pretty beat up, was missing the door, and had a 4208-style annunciator installed about 6 inches away from it. The pulls were break-glass T-bars, and the NA’s were LifeAlarm speakers on 2903 light plates. There were also single-gang Wheelock LSM remote strobes in the bathrooms.
An eye center that I go to has an old Fire-Lite system with BG-10 pulls and Fire-Lite relabeled Vibratone 450D’s on flush-mount plates. At least one of them was not labeled by Fire-Lite and instead said Federal. The smokes were an old Edwards 12VDC model, and in one section, there were newer i3 smokes.
An old hotel near me has an ancient Notifier system with BNG-1 pulls and Notifier-branded 10" bells. A few of the bells have been replaced by newer 6" Wheelock bells and Edwards Adaptabels. The smokes are a mix of System Sensor 100-series and the Edwards smokes mentioned above. The hotel recently closed and is scheduled to be torn down, so I’m going to see if I can get permission to remove some of the old alarms.
If you have any luck getting alarms from the old hotel see if you can pick me up one of the Notifier bells. 
I may be getting a job at the Shaw’s Supermarket near my college. Here is a recap of their unusual Simplex fire alarm system but I found a few more interesting tidbits on it:
*The panel is a Simplex 2001, like I mentioned. I took a glance at it but didn’t see a March Time card. It’s a later mid-1980s-style small version with the black door casing. There is a 4-inch Simplex trouble bell above it.
*The signals are mostly these unknown electronic horns (I know they are electronic because I saw their grilles and they looked somewhat like the grilles on a Wheelock AS or an MT turned sideways), behind SAE AV32 strobe plates. The restrooms and the office of the hiring manager have the remote V33 version of the strobe. However, near the frozen foods section is an SAE VA4 horn/strobe (the older 1990s version with the longer strobe lens), and inside a kitchen behind the meats counter is a newer-style Wheelock MT horn/strobe.
*I have only seen three pull stations, all out of the average customer’s reach. There is an Edwards 270-SPO pull near a fire exit in the deli kitchen. There’s also an FCI MS-2 pull station at the stairwell going to the second floor (employees only), and in the employees’ lounge is a Simplex 4251-20 pull (this is obviously the original).
*The smokes are these kind of round 9-volt mysterious 1980s models, located only in the restrooms and offices.
*There are also Simplex 2098-9808 remote alarm indicators on the ceiling in several areas.
Well,
The AH/AS, NH/NS, Z Series and select RSS products will be discontinued as of March 31st, 2010.\
got this from the Cross Reference Guide. So get these while they’re hot!
Oh no. First the “classic” SpectrAlert. Then Faraday’s own alarm signals. Now this!
I discovered an interesting discovery at my school today. I think there are some newer alarms.
Some of the bathrooms have Gentex GX-90 horn/strobes on the ceilings. I noticed when a girl went in one of the girls bathroom and it was on the ceiling. I haven’t gotten a close look for obvious reasons. I haven’t noticed any in the boys rooms, but maybe there will be at some point. I bet those were added later because the 4040s couldn’t be heard easily. I sure hope to discover one in one of the boys rooms as I could get a closer look. I will report here if they install any.
What was the point of the Z series, it was only out for about 3 years.
I guess it was basically a quick response to the trend of snap-on casing. Underneath, of course, it was the same as the NS. I’ve only seen them in maybe two or three installations. But the Exceder seems to be their full-fledged entry into the new generation of alarms.
Well that stinks. I always liked Wheelock for their wide variety of alarms, and now all their series of horns are being discontinued for the Exceeder series, which IMO, looks like it was designed pretty cheaply and quick.
Care to post the link where you found out this news?
Well, the Wheelock MTs will still be in production, according to what I heard. Also I saw a product on the Wheelock website called the HS series, which is basically the same horn/strobe as the MT-24-MCWs but only with Continuous and Code-3 (i.e. the Wheelock HS-24-MCW). I suppose that’s going to replace the Wheelock AS and NS series too. Now if only Wheelock will resume production on the 34T and design a version with an ADA-compliant strobe, and we’d practically have a new version of the 7002T!
I suppose this snap-on design was so Wheelock can complete with System Sensor’s SpectrAlert Advance series and Simplex’s TrueAlert series.
It was so it could compete with the SpectrAlert series, although the TrueAlerts aren’t snap-on like the ZNS/Exceeder series and the Advanced series.
At least I’ll still have my E70s! 
I think I have only seen 2 places that installed Z series alarms in my area. I’m glad I bought a ZNS a few months ago.
I’ve also only seen two ZNS-series alarms in person; a Friendly’s restaurant (Mircom system) and a T.J. Maxx (Notifier system.)
BTW, I think we should make this into a separate thread, Wheelock discontinuing those alarms.
I’ve only seen ZRSs, in the restroom of the new Meijer in Huber Heights, Ohio.
I have seen ZNSs the following places:
The Barnes & Noble at the Atrium mall has a ZNS in it, however most other alarms in the mall are Wheelock horn/strobes or speaker/strobes.
I went to a wedding at a hotel near Brattleboro VT (the hotel was across the NH border though lol). This place has a Mircom system with dual action T-Bars and Wheelock ZNSs. I saw the panel in the front lobby, but I forget the model #.
Arlington Green Line Station in Boston is being renovated. Half of the station is finished and they have ZNSs and I’m assuming BG-12s too. The MBTA has BG-12s and Wheelock all over the place mostly replacing SAE horn/lights or horn/strobes.
Sorry about double posting, and if you don’t like huge detail, I would suggest not reading this. Here is what I know about the MBTA’s fire alarm systems. There are many more stations than the ones I have listed, but this is all I know about. I am a rail fan so I have been around much of the system:
Red Line:
Alewife: They have BG-12s here, and I believe Wheelock horn/strobes (I forget the model, but I am willing to bet they are MTs). I also know there are some Federal 450Ds with non-ADA strobes and maybe they have Faraday horn/strobes instead of Wheelock ones. The Burtuccis has SAE horn/lights, I believe they are 2DCDs behind V33s and FCI MS-2s.
Harvard: Wheelock MTs and FCI BG-12s (most of the T’s BG-12s are FCI). I also have seen a couple small bells on SAE V33 lights leftover from the system during the 80s renovation. I also swear I remember seeing Edwards 270-SPOs a long time ago.
Central: Wheelock MTs on adapter plates replacing Federal 450s behind SAE V33 strobe plates. Pulls are BG-12s, I think.
Kendall: They still have Federal 450s behind SAE V33s here. This stop is very similar looking to Central so the system is similar to Central’s old system. Pulls are BG-12s.
Charles/MGH: Wheelock ASs with most likely BG-12s.
Park Street: Wheelock ASs and I believe BG-12s. I also remember someone photographing SAE horn/lights (or maybe it was Gov’t Center). I also think there are back boxes left over.
Downtown Crossing: Wheelock MTs and BG-12s
South Station: I think there are MTs in the subway area with BG-12s. I forget the alarms in the station area, they might be Faraday or Honeywell or maybe Simplex. As for the commuter rail area there are Federal SelecTones with non ADA strobes.
Quincy Center: SAE V33 horn/lights on the subway platform. Wiley209 also knows a lot about the system here.
Quincy Adams: Wheelock horn/strobes, possibly weatherproof ones.
Braintree: Wheelock ASs and BG-12s. Also remains of SAE horn/lights.
Green Line:
North Station: I think they have Wheelock alarms and BG-12s in the subway area. The station area has Simplex 4099s and TrueAlert speaker/strobes (it’s in the Banknorth Garden). There are BG-8s and SAE horn/lights in the parking garage. The commuter rail area aparently has Federal SelecTones with non-ADA strobes (like South Station).
Haymarket: I think they are MTs or ASs and BG-12s
Government Center: MTs or ASs and BG-12s, formerly SAE horn/lights
Park Street: See “Red Line” for info.
Boylston: Wheelock weatherproof alarms?
Arlington: Wheelock ZNSs with most likely BG-12s.
Copley: I should know but I forget. I think there are MTs or ASs with BG-12s.
Prudential: Wheelock MTs and BG-12s in the station, although the main mall has Simplex devices.
Kenmore: I think there are ASs with BG-12s here, maybe MTs.
Blue Line:
Government Center: See “Green Line” for info.
State: Wheelock ASs and BG-12s. There are also some leftover SAE V33 horn/lights that I am willing to bet are disconnected.
Aquarium: System Sensor SpectrAlert classics and BG-12s. It’s interesting these are the only ones I know of on the system. The MBTA’s honeywell installers seem to buy most of their alarms from Wheelock.
Wonderland: This is one of the rare Simplex systems found at an MBTA subway station. They have Simplex single action generic T-bars aka the 2099-9138. The alarms are Simplex 4903 horn/strobes, probably electronic.
Orange Line:
Malden Center: This place actually has a Siemens system! This is rare for an MBTA station and rare around Boston in general. The pulls are MS-501s (or maybe MS-51s) and for some reason, System Sensor SpectrAlert Advances! This is a very strange system as Seimens doesn’t usually buy from System Sensor. I haven’t seen the panel so I don’t know if Honeywell bought the Siemens pulls. This is a recent upgrade, I believe, and it most likely replaced SAE horn/lights.
North Station: See “Green Line” for info.
Haymarket: See “Green Line” for info.
State: See “Blue Line” for info.
Downtown Crossing: See “Red Line” for info.
Back Bay: They have Wheelock ASs and BG-12s.
So this is all I know about the MBTA’s systems. If anyone has more info, please tell me.
I’ll be taking the green line tomorrow when I go to see the last Red Sox game of the season, so I’ll take a look.