Columbine fire alarms

Hello, I wanted to make this topic to get an idea of what fire alarms were at columbine high school during the attack on that horrible date of April 20 1999. I do know that the pull stations are Fire lite BG 10s and the NAs are system sensor mass horn strobes, but the panel remains a mystery. Any idea?

I suck at identifying old panels (beginning of time - 2010) but it most likely had been some 1990s mid-large Fire-Lite panel.