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About product and suppliers:
        Alibaba.com offers 1,663 npn metal sensor products. About 92% of these are sensors, 1% are alarm. 

A wide variety of npn metal sensor options are available to you, such as magnetic sensor, consumption sensor, and pressure sensor. You can also choose from inductance sensor, optical sensor, and current sensor. As well as from switching transducer, digital sensor, and analog sensor. And whether npn metal sensor is free samples, or paid samples. 

There are 1,593 npn metal sensor suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and Hong Kong, which supply 98%, 1%, and 1% of npn metal sensor respectively. 

Npn metal sensor products are most popular in Mid East, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 699 with ISO9001, 491 with ISO14001, and 486 with OHSAS18001 certification.