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About product and suppliers:
        Alibaba.com offers 5,301 door open sensor products. About 43% of these are alarm, 11% are sensors, and 1% are shutters. 

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

There are 5,301 door open sensor suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of door open sensor respectively. 

Door open sensor products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 2,317 with ISO9001, 321 with Other, and 266 with ISO14001 certification.
        
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