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About product and suppliers:
        Alibaba.com offers 820 access control unit products. About 23% of these are locks, 14% are access control card reader, and 11% are access control system. 

A wide variety of access control unit options are available to you, such as free samples, paid samples. 

There are 820 access control unit suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of access control unit respectively. 

Access control unit products are most popular in Western Europe, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 307 with ISO9001, 57 with Other, and 56 with ISO14001 certification.