Usage Tips:Features: 1.Adopt standard 86 box industry standard, fast scanning speed and high recognition rate. 2.Strong compatibility, can be connected to any controller that supports for Wiegand input. 3.Widely used in business office building visitor entry management, scenic tourist staff management, community visitor entry and exit management, smart home, etc. 4.Achieve perfect upgrades for traditional credit card systems in various industries. 5.Small size, easy to carry and store, convenient to use and with good performance. specification:Item Type: Card Reader Optional Style: ID Card, IC Card Material: Zinc Alloy and Acrylic Card Reader Type: for EM card Barcode Type: QR, barcode Communication Method: For Wiegand 26/34/RS232/RS485/TTL Working Frequency: 125 (Khz) Decoding Mode: Image decoding Reading Direction (barcode): 45 inclined plane with the lens as the center point Scan Coding Automatic induction, buzzer prompt Working Voltage: 8-12V Working Current: 800mA Card Reading Distance (card): Approx. 3 - 6cm / 1.2 - 2.4in Reading Distance (QR): Approx. 0 - 20cm / 0 - 7.9in Reading Speed: