Maybe, but I doubt it. Like you said, it seems a couple decades too new for that. That being said, I have no idea what else it could be. It does bear some resemblance to a Firecom LSN-2000 (which would make sense because it is in NYC), but there are also some major differences. Honestly though, it’s probably just an older LSN-2000, as they have been around for a long time and have probably changed a little bit over the years.