What Should Be Careful When Installed The Access Control Card Reader?
2016-11-08 10:28
Details of the problem:

What should be careful when installed the Access Control Card Reader?

Expert answer:

It have 125KHz、13.5MHz and 2.45GHz etc frequency RFID Reader in market, among of them, 125KHz、13.5MHz are in a majority(125KHz is EM format ID card、13.5MHz is MF1 format IC card),the technology and installation both of them are similar. You should be more careful on RFI and metallic shield.

1、RFI(Radio Frequency Interference): The distance between two RFID Reader should be over 0.3m, avoiding them to interfere with each other.

2、Other Interference: Didn't installed close to the device which have similar frequency, such as: Motor、Electric Welder.

3、Metallic Shield:Don't installed on the metal surface, it will cause the reading distance become short or cannot read card.

4、Communication Distance: The RFID Reader on market mostly used WIEGAND communication way and diatance of it is about 100m (suggest 80m), too long diatance will cause the card information transfer wrong, then cannot read card normally.

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