Which of these horns are you more likely to see (as in which one would have been most common). They both are made by EST, but they both seem rare, so that is why I am asking this question. Because I’m just curious.
There are these first generation Integrities that are electromechanical instead of electronic which many people on YouTube say are very rare. Indeed, the only way one could tell what it would be is if the horn actually went off. (https://www.youtube.com/watch?v=256XL32OcAs). They sound just like the 892 horn/strobe, electromechanical, but in an Integrity body, but possibly has different pitches.
Or would you see the EST 792 appear more common? (https://www.youtube.com/watch?v=256XL32OcAs). I haven’t seen a whole lot of these, but I know they are also electromechanical and can vary in pitch.
The Edwards 892 doesn’t use an electromechanical horn, neither does that Integrity. I own several 120VAC versions of the early Integrities, and they use a piezo, but larger than the newer Integrities.
The 892s may not be electromechanical, but the pitch can be changed which is what I was basing my assumption on. (https://www.youtube.com/watch?v=aPbQCVGuxt0) is the video where it is showed that the 892s can have their pitches adjusted, so if they use the same horn as the first generation Integrity and the 792, they could have their pitches changed also.
Yes, you can change the pitch on a 792. I’d say that 792’s are a little more common than the first-gen Integrities. However, it’s impossible to tell which horn an Integrity has without hearing it, so there may be more out there than we think. My elementary school had them.
There is a potentiometer towards the bottom of the unit. Other than a possible pitch changer, I’m not sure what it would be there for. However, I would rather not mess with the alarm.
That is my 1st Gen Integrity (you shared my video of it in this topic, lol). On the outside, there aren’t any major differences to the outside other than the fact the letters for the “FIRE” marking are a bit bigger than the newer Integrities. This alarm is interesting because this is a cross between the 792 and an Integrity.