One of our client feedback that Wiegand26 has no signal when they use RFID reader SR681.

 

How to solve it if you also meet this issue ? Please refer to the below solution.

 

  1. Take power from the controller directly, connect four wires, power supply 12V+ GND+D0 +D1

 

     2. The card reader is powered separately, and the GND needs to be connected to the GND next to the controller D0 D1