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 Method: Wiegand/USB/RSs232/TCP-IP/RS485 Decoding Mode: Image Decoding Reading Direction (Bar Code): Angle 45° 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 Operating System: WindowsXP/7/8/10), Linux Working Temperature: -20°C -70°C 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.