Specification: Material: Plastic Size: 86 x 86 x 42mm/3.4 x 3.4 x 1.7in Weight: 150g/5.3oz Color: Black Card Reader Type: Em-card or IC card Barcode Type: QR, One-/Two-dimensional code Communication: Wiegand/USB/RSs232/TCP-IP/RS485 Decoding Mode: Image Decoding Reading Direction (Barcode): Angle 45 with the lens as the center point Scanning Code Features: Automatic Induction, Buzzer Prompt Operating Voltage: 8-12V Working Current: 800mA Read Distance (Card): 3~6cm Reading Speed: Less than 200ms Read Distance (QR Code): 0-20cm System: WindowsXP/7/8/10), Linux Working Temperature: -20C -70C Working Humidity: 10%~90% Style: ID Package Contents: 1 x QR Code Reader 1 x Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.