1D 2D Barcode Scanner USB QR Bar Code Reader USB RS232 TTL Interface Bar Code Scanners Kiosk Small Fixed Mount Vending Machine Parameters: Imaging Sensor: CMOS Optical Source: 620nm Visible red light diode Trigger Mode: Continuous, Auto-InductionIndication: Buzzer & LED Resolution Ratio: 640*480 Interface: RS232, USB, TTL Decoding Speed: 500times/second Resolution: 4mil Size: 61*52*23.7mm Minimum Contrast: 25% Decoding Capability: 1D: UPC/EAN, with complementary UPC/EAN, Code128, Code39,Code 39Full ASCII, Coda bar, industrial /Interleaved 2 of 5 Code93, MSI, Code11, ISBN, ISSN, post, GS1 Databar, etc. 2D: PDF417 QR Aztec DataMatrix Micro PDF417, etc.Depth of field:40-120mm Code 39(5MIL)20-300mm EAN-13 (13MIL)20-150mm PDF417(6.8MIL)15-250mm QR Code(20MIL) Scan Angle: Roll 55, Pitch 25, Skew 75 Working Voltage: 3.3V Current: Max. : 212mA Working : 156mA212mA Stand-by : 156mAStorage Temperature : -40C ~ 70C / -40to 158F Working Temperature : -20C ~ 60C / -4to 140F Relative Humidity: 0 ~ 95%Droptest: 1.5m fall to concrete Certificate: CE, FCC, RoHS, IP54 Interface: USB, TTL, RS232, 3 types for optional. Purchase Guide: USB module's cable is connected with module, can not be plug out, the interface is USB-A, TTL module's cable is connected with module, can not be plug out, the interface is TTL, RS232 module's cable is connected with module, can not be plug out, the interface is RS232. Features: 1.Wide angle lens design, scans a large area. 2.Effectively scans barcodes in sensitive lighting conditions, including through glass/plastic, in bright sunlight, in dark environments, or on curved/reflective surfaces. 3.Super scanning and decoding ability, can read incomplete and fuzzy codes.Scanner reads 2D & 1D barcodes printed on labels or displayed on device screens. 4.Application fields: Electronic tickets/coupons, mobile marketing and office automation, kiosks,medical equipmentthe series fixed mount barcode scanner is able to read barcodes from paper and mobile phones.