KR500 Reader User Manual
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5. Wiegand Connections
6. Precautions
1. The operating frequency of the card reader is 125KHz. Therefore, interference
frequency ranging from 100KHz to 150KHz cannot exist on the site where the
card reader is installed.
2. To prevent emission magnetic fields of card readers from affecting each other,
the installation distance between every two card readers must be greater than
10 cm.
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