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About product and suppliers:
        Alibaba.com offers 3,660 magnetic contact door sensor products. About 79% of these are alarm, 13% are sensors. 

A wide variety of magnetic contact door sensor options are available to you, such as magnetic sensor, door, and window. You can also choose from inductance sensor, optical sensor. As well as from switching transducer, digital sensor. And whether magnetic contact door sensor is free samples, or paid samples. 

There are 3,670 magnetic contact door sensor suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and Singapore, which supply 97%, 1%, and 1% of magnetic contact door sensor respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 1,402 with ISO9001, 127 with ISO14001, and 82 with Other certification.