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Question:

Access control systems are generally put a few lines are a few core lines have what role?

Access control systems are generally put a few lines are a few core lines have what role?

Answer:

Four-core card reader line, if you want to use the lamp effect put five core line, plus or minus two, two signals, a display light. Two-core lock line, if there is signal detection, you need four-core line, the positive and negative must be, the signal detection core. Out of the switch two core line, this line did not require, as long as you can off, you can use one of the lines inside the line. If the access control software, communication is 485 is the two core line, 422 is the four core line.
From the controller to the computer, the early 485 interface, now are usually the network interface.
From the controller card reader, electric lock, open the door button is usually: card reader six-core (at least four-core), electric lock two-core (wire diameter according to the distance increase and decrease), open the door button two, Mencius, then add a two-core line.

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