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About product and suppliers:
            320 difference sirens products are offered for sale by suppliers on Alibaba.com, of which alarm accounts for 1%. 

A wide variety of difference sirens options are available to you, such as waterproof / weatherproof. 

There are 13 suppliers who sells difference sirens on Alibaba.com, mainly located in Asia. The top countries of suppliers are China, Hong Kong S.A.R., from which the percentage of difference sirens supply is 92%, 7% respectively.