Well, I have now been collecting fire alarms for two years! Here are my latest updates to the collection...
System Sensor "classic" SpectrAlert horn/strobe. This particular model is a P1224MC (runs on 12/24 -VDC operation and has a multi-candela strobe). It's actually my quietest fire alarm horn in my collection when it's set to electromechanical/low volume. I still see these in many places (mostly restaurants or smaller stores), along with the SpectrAlert Advance.
Back of the SpectrAlert. It came with those metal jumpers so it could also be used as a 2-wire alarm (this is how I prefer to run it).
System Sensor i3 photoelectric 2-wire smoke/heat detector. I got this from Massasoit College when they replaced the Science and Technology buildings' systems this summer (2-zone Faraday FireWatch IIs being swapped out for a fully addressable Notifier/JC NFS2-640 system.) These detectors were installed in 2008 when they initially replaced all the old signals and pulls and most of the old heat sensors.
Old Standard Electric Time heat sensor, made by Chemtronics. They actually still had a few of these in the basements, while the other parts of the buildings had the i3 detectors replace them in 2008. I also got this from the college during the system upgrade this summer (they replaced all the old heat sensors and existing smoke detectors with addressable Notifier 2251 smoke detectors.)
Standard heat sensor next to the Simplex version. Note the different trim bases; the Standard version's base seems heavier.
Chemtronics 601 heat sensor; they had this somewhere in the Liberal Arts or Humanities buildings before they were renovated in 2005 and upgraded to their current Faraday MPC-7000 system (which may also be on its way out soon.)
On the right is the Chemtronics 601, and on the left is my old Simplex 4255-5 heat sensor. They both look very similar (but I think the 4255-5 was actually manufactured by Edwards.)
Fire-Lite BG-10 pull station I got from Fire Alarm Fan (it just arrived today). I do like how strong the "PUSH IN" spring panel is; it's pretty difficult to pull the alarm without pushing the panel in to grasp the lever.
Inside of the BG-10, complete with the infamous housing failure warning sticker.
An OLD Simplex 4262-5 ionization smoke detector. They have one of these at the K-8 school I went to for kindergarten, located in the cafetorium.
Back of the 4262-5 detector.
Inside the detector, with the cover removed. According to the tag, this was made by the Statitrol Corporation, and has a manufacturing date of February 5, 1971!
Wheelock RP-R retrofit plate. I put my Wheelock AS on it for this picture for demonstration purposes. This was meant for when a Wheelock signal would replace an older audible/visual alarm (any of the old SAE, Simplex or Standard alarms, etc.)
Here are the stuff in my "unsorted" category for now. I really need a key for my Standard pull and a horn mechanism for my Edwards "fire horn" though
Space Age Electronics devices. I hope to someday get an incandescent version of the AV32 (the one here actually has a red xenon strobe!)
The Faraday stuff in my collection (not counting many of my duplicate 6020 horns!)
The Honeywell stuff in my collection. Now I just need to get a SpectrAlert Advance and a BG-12 pull...
The Wheelock/Cooper Notification devices in my collection so far. I soon plan to get a 34T/7002T and most likely an NS horn/strobe as well.
The Simplex devices in my collection (including older IBM stuff I have). Again, some duplicate stuff not shown (including several 4265 heat sensors, 2098-9536 4-wire bases and 4901-9805 horns.)
So far, I also should be getting an Edwards 270-SPO pull, Wheelock 34T horn, Simplex 4050-83 light plate, 4903-9105 strobe plate and 2099-9103 pull station from 7002t/Dan D., and another Wheelock MT (horizontal strobe) from NewAgeServer.