Scientific Prototypes/SP Mark VII Siren (1970s/1980s NYPD)

Here's a Scientific Prototypes Mark VII siren, used throughout the 1980s by a few police and EMS agencies in and around NYC (most notably the NYPD, TAPD, HAPD, and NYC-EMS). This particular model is the NYPD variant. Special thanks to Kent @ RetroTech Electronics Service for getting this unit repaired and running again!

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