PQ-510NW: 125KHz ASK EM & QR Code(Barcode) proximity reader, Wiegand 26&34bits, DC 12V. PQ-510M0W34: 13.56MHz & QR Code(Barcode) proximity reader, Wiegand 34bits, DC 12V, Read card number: in reverse . PQ-510M0W34S: 13.56MHz & QR Code(Barcode) proximity reader, Wiegand 34bits, DC 12V, Read card number: in positive
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