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About product and suppliers:
        Alibaba.com offers 392 building intercom audio products. About 54% of these are video door phone, 37% are audio door phone, and 1% are speaker. 

A wide variety of building intercom audio options are available to you, such as passive, ip camera. You can also choose from computer, home theatre, and mobile phone. As well as from mini, portable, and wireless. And whether building intercom audio is mini camera, hidden camera, or bullet camera. 

There are 388 building intercom audio suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Philippines, which supply 99%, 1%, and 1% of building intercom audio respectively. 

Building intercom audio products are most popular in Northern Europe, South Asia, and Southern Europe. 

You can ensure product safety by selecting from certified suppliers, including 297 with ISO9001, 12 with Other, and 6 with ISO14001 certification.