High performance decoding chip, can read 1D/ 2D QR codes and IC card, Communication Method: WIEGAND 26/34/RS232/RS485/TTL. Using image scanning technology, it can scan paper code and screen code, fast to recognize the barcodes. The buzzer make a crisp sound "Beep" to prompt after successfully scanning. Made of high quality Zinc Alloy Frame and Acrylic Panel material, the scanner is and not easy to damage. The scanner module can be applied in occasions such as elevator, community visitors' entry and exit management and son on. Perfect upgrade of traditional card swiping system for industries. Barcode Type: Qr, One/Two-Dimensional Code Communication Method: WIEGAND 26/34/RS232/RS485/TTL Decoding Mode: Image Decoding Reading Direction (Bar Code): Angle 45° With The Lens As The Center Point Scan Code Characteristics: Automatic Induction, Buzzer Promp Operating Voltage: 8-12v Working Current: 800ma Card Reading Distance (Card): 3~6cm Reading Distance (QR Code): 0-20cm Working Humidity: 10%~90% Operating Temperature: -20℃~70℃ : XP/7/8/10), Linux Indicator Light: Blue Work Light, Green Feedback Light Colour:As Shown Material:plastic Package Contents: 2 x Embedded 1D 2D Barcode Scanner 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.