The cards that the card reader can read are: ID, IC, HID, UHF, dual-frequency cards
If the access control card reader has been working normally and suddenly fails to read the card at a certain moment, the reason may be a power failure, damage to the card reader, or strong magnetic interference. When checking the card reader, you can investigate these reasons one by one. If the above problems are eliminated, the card still cannot be read, or static electricity may be generated after using it for a long time, and this static electricity will cause excessive electricity and cause the access control card reader to not work properly.
In this case, it may be that the access control card reader is installed on the metal because the metal has a shielding function, part of the radio waves emitted by the card reader is shielded by the metal, and the induction slows down. In addition, if the card reader is installed in and out, the above problems will also occur if the distance between the two card readers is too close, and the interference of radio waves will cause slow card reading and short sensing distance.
Damage to the communication converter, a short circuit in the line, and damage to the communication module of the card reader will cause the access control card reader and the software to fail to communicate. If the communication converter is damaged, the possible cause is the quality of the converter or strong static electricity on the communication line. If it is caused by a short circuit, it means that the line is damaged and needs further investigation. If the communication module of the card reader is damaged, it may be due to high power or static electricity on the line.
The card reader is an important part of the access control system and the key device for the signal input of the access control system. If the access control system is compared to a person, the card reader is like a human eye. It is related to the stability of the entire access control system. If an access control system controller and electric lock are both good, if the quality of the card reader is defective, it will also cause the door not to be opened, which will affect the acceptance and use of the project.
ID、IC、HID、ID+IC、UHF (WG26 WG34 USB network serial port)
Card reader problem, card type is not supported, no authorization.
No authorization, permission is deleted, the card is damaged.
It depends on what kind of card reader, the ones with the software are generally UHF card readers and card issuers.
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