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About product and suppliers:
        Alibaba.com offers 4,995 police siren products. About 47% of these are alarm, 17% are speaker & horn, and 1% are smoke detector. 

A wide variety of police siren options are available to you, such as fire, personal, and auto. You can also choose from siren, speaker, and electric horn. As well as from 12v, dc 12v, and 24v. And whether police siren is aluminum, pvc, or abs. 

There are 5,000 police siren suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and Pakistan, which supply 99%, 1%, and 1% of police siren respectively. 

Police siren products are most popular in Domestic Market, North America, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 2,198 with ISO9001, 1,113 with Other, and 909 with OHSAS18001 certification.