Cerberus Pyrotronics MSI-20B

This is the addressable version of the Pyrotronics MS-501.

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Gamewell A8814

Gamewell A8814

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I have no idea what year this alarm is from, only that it’s old and heavy.
Harrington Signal RMS-1T-KO

Harrington Signal RMS-1T-KO

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Behind the “Key Operated Only” cover is the regular pull lever, so that cover can be removed and this could...
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