Dynamic QR Code Access Control Reader Access Control RFID Card Reader Mobile Card Barcode Scanner Specifications: Material: Plastic Size: 86 x 86 x 42 mm Weight: 150 g Color: Black Card Reader Type: EM Card or IC Card Barcode Type: QR Code, One/Two-Dimensional Code Communication: Wiegand/USB/RSs232/TCP-IP/RS485 Decoding Mode: Image Decoding Reading Direction (Barcode): 45° Angle with Lens as Center Point Scan Code Functions: Automatic Induction, Buzzer Operating Voltage: 8–12 V Operating Current: 800 mA Reading Distance (Card): 3–6 cm Reading Speed: Under 200 ms Reading Distance (QR code): 0–20 cm : Windows XP/7/8/10, Linux Operating temperature: -20 °C to 70 °C Humidity: 10–90% Style: ID Package contents: 1 x QR code reader 1 x data cable Only the above items are included; other products are not included. Note: Light reflections and different display settings may cause the color of the item shown to differ slightly from the actual product. The allowable measurement deviation is +/- 1–3 cm.