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/RS232/TCP-IP/RS485 Decoding Mode: Image Decoding Reading Direction (Bar Code): 45 Degree Angle with the Lens as the Center Point Scan Code Characteristics: Automatic Induction, Buzzer Prompt Operating Voltage: 8-12V Working Current: 800mA Reading Distance (Card): 3-6cm Reading Speed: Less than 200ms Reading Distance (QR Code): 0-20cm Compatible Systems: Windows XP/7/8/10, Linux Working Temperature: -20°C to 70°C Working Humidity: 10% to 90% Style: ID Package Contents: 1 x QR Code Reader 1 x Data Cable Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement may vary by +/- 1-3cm.