Model M

Model M
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Company	Sterling
Type	Electromechanical

The M series was a series of sirens made by Sterling. They usually either came in 16/16 port or 8/16. They came in 2 models: The M-5 and the M-10. The M-series was produced from the 1920's up until the 1970's, when Sterling Siren and Fire Alarm was acquired by what is now Sentry Siren Incorporated. The M-series is known for its reliability and durability, and many communities still use M-series sirens to this day, some of which chose to use M-series sirens over more modern sirens due to their durability. One of the advantages of the M-series was its simple design and operation, which made maintenance easy and relatively simple.