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About product and suppliers:
        Alibaba.com offers 38,744 door alarm products. About 37% of these are alarm, 1% are desk & table clocks. 

A wide variety of door alarm options are available to you, such as door, window. You can also choose from buzzer, parking sensor, and insulated. As well as from free samples, paid samples. 

There are 38,533 door alarm suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 98%, 1%, and 1% of door alarm respectively. 

Door alarm products are most popular in Mid East, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 14,602 with ISO9001, 2,879 with Other, and 1,699 with ISO14001 certification.