Datasheet

Usage
Pin Definition and Rating
Pin Name
Function and Note
Rating
GND
Connect to the Host GND
-
VCC
Power supply
5V
RX/D0
RX - In Uart mode, it is unused
-
D0 - In Wiegand mode, it represents Data0
5V or 0V
TX/D1
TX - In Uart mode, it represents TX data
5V or 0V
D1 - In Wiegand mode, it represents Data1
5V or 0V
Hardware Installation
* Uart Mode (Jumper set to the left two pins)
You would need to select the jumper to "U" to enter this mode, and teh setting is: 9600bps, N, 8, 1, TTL
output
Output Time sequence