Fire Alarm Systems I found in Los Angeles County, CA

User Created Fire Alarm Media
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Simplex speaker outside a childcare center in Santa Monica
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Wheelock 31T-115 and Amseco Bell at my old school (It did code 4, like on older Autocall panels). The place is going to be refurbished into a senior center, so I’m not sure if they will replace it or not.
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EST2 system at The Bloc (formerly Macy’s Plaza) in Downtown LA.

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In the second image, I believe that Wheelock 30T is on an old IBM 4037

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I’m not sure if it’s an IBM.

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I believe it could be Simplex–the successor to IBM’s time recording division