Auto-Matic Alarm Systems Model OC-9

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Auto-Matic Alarm Systems Model OC-9
Company Auto-Matic Alarm Systems Co., Inc.
Type Omnidirectional Electromechanical
Voltage 12 V AC

The Model OC-9 is a small omnidirectional siren produced by Auto-Matic Alarms Systems Co., Inc, based out of Chicago, IL. Not much is known about the company or the siren, and few units exist today, with most being in private possession.

History and Design

A privately owned first generation OC-9.

1st generation

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A second generation OC-9.

2nd generation

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