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1 Product Introduction
1.1 Product Overview
The Access Control Extension Module can work with the access control terminal or door station. The
Extension Module communicates with the access control terminal or door station through RS-485
BUS, and connects with door detector, exit button, card reader and lock. The Extension Module
transmits card information, door open information and alarms to the access control terminal or door
station, improving the access control security.
1.2 Networking Diagram
Figure 1-1 Networking diagram
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