Audio door phone, Audio Door Phone - video door phones,intercom system,video door phone,modules.car monitor etc.

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Product Description Online order form META tags - descriptions

Non-polarity 2 wire connection

Specifications:
1) Intercommunication
2) Electric-controlled unlocking
3) With muilti-function:call in,call out,intercom
4) aluminium outdoor unit

TF-01+LF-01

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Product Name:	Product describe: Non-polarity 2 wire connection ,one to one audio door phone Your message:
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Non-polarity 2 wire connection ,one to one audio door phone

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