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About product and suppliers:
        Alibaba.com offers 4,635 magnetic contact door sensor products. About 56% of these are alarm, 37% are sensors. 

A wide variety of magnetic contact door sensor options are available to you, such as door, window, and personal. You can also choose from free samples, paid samples. 

There are 4,643 magnetic contact door sensor suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and Singapore, which supply 98%, 1%, and 1% of magnetic contact door sensor respectively. 

Magnetic contact door sensor products are most popular in Western Europe, Domestic Market, and North America. 

You can ensure product safety by selecting from certified suppliers, including 1,326 with ISO9001, 124 with ISO14001, and 87 with Other certification.