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DIR and GND pins
MODEL : GP1604G-S1
When LEn-n is HIGH
They will flash when receiving or sending data
Extended lever design for higher sensitivity and easier actuation
RFID USB Reader (125khz ) ID 74hc DIR and GND pinsProduct Description This 125KHz RFID USB Reader is a compact and reliable device designed for reading low frequency RFID cards such as EM4100 and EM4200. It operates in read only mode, making it ideal for applications like access control, attendance systems, and ID verification. The device features plug and play USB connectivity, requiring no driver installation. Once connected, it works as a keyboard output device (HID), automatically sending the