Features: 1.IMAGE RECOGNITION: The Round 2D codes scanner module uses advanced image recognition algorithms to easily read all types of 1D and 2D barcodes. 2.SCANNING MODE: Round barcode scanner reader module scanning mode for induction scanning, continuous scanning. 3.UART INTERFACE: The QR code scanner module has an on board UART interface, which makes integration into various embedded devices easy and convenient. 4.HIGH ACCURACY: 1D code 5MIL, 2D code 10MIL, PCB material, long time use without deformation, so as to ensure long term stability. 5.WITH LED INDICATOR: The 2D codes scanner module is equipped with a circular LED display for code scanning applications such as elevators. specification:Item Type: Round 2D Codes Scanner Module Material: PCB Resolution: 640x480 Scanning Angle: Horizontal 70, Vertical 55, Rotate 360 Scanning Mode: Induction Scanning, Continuous Scanning Accuracy: 1D Code 5MIL; 2D Code 10MIL Communicate Interface: UART Serial Port (Default 9600 8N1) LED Light: Blue: Code Scanning Green: Successful Decoding Working Voltage: 3.3V Working Current: 120mA Electrostatic Protection: Contact Discharge 6KV, Air Discharge 12KV IP Protection: Positive IP54 Operating Temperature: -30 to +70C Storage Temperature: -40 to +80C Operating Humidity: 5%RH to 95%RH (Non Condensing) PackageList:1 x Round2DCodesScannerModule 1 x Connecting Line 1 x Cable