Duplicate card number filter module

Duplicate card number filter module

Model No.: Wiegand-Fliter

The RFID card reader can repeatedly and quickly read the card, which can reach dozens to hundreds of times per second. Connecting to the ordinary access control board will cause signal blockage or even crash, and also generate a large amount of repeated card swiping data, which will affect the use of the access control system. To solve this problem, a duplicate card number filter module is introduced. This module can filter the repeated card numbers received continuously, reducing the burden on the access control board.

The main function

1. Receive the Wiegand output of the card reader, filter it and send it to the access control board

2. The card number received for the first time is output directly, and duplicate card numbers are blocked within the set time

3. Set the shielding time through the TTL port, the range is 0-100 seconds (default 5 seconds)

4. The blocking time is calculated according to different card numbers, and up to 10 card numbers can be blocked at the same time

5. Support WG26-WG80 protocol, automatic identification without setting

6. No need for external power supply (5~ 24V30mA) when using access control board for power supply

S4A Datesheet_Duplicate card number filter module