Rfid card access systems device: also called RFID door lock access control system, recognize the access rights by reading the card or reading the card plus password.
Advantages: the door is convenient and safe; the service life is long, the theoretical data is at least ten years; the safety is high, the microcomputer can be connected, the door opening record can be realized; the two-way control can be realized. Cards are hard to copy.
Disadvantages: high cost, easy to be copied.
Proximity access control systems readers are the most popular choice for commercial access control systems. They are easy to use, and when cards are lost, it’s easy to deactivate them and post new cards. They can also be combined with photo IDs for added security. Close-range cards are the most common and can operate from one inch to three feet from the sensor. Because there is no contact between the card and the card reader, they are very reliable and hard to wear. They are also very cheap.
