GM875 Bar code reader module is a high performance scanner, can read 1D bar code easily and read 2D bar code with high speed. It also high scan speed for linear code, even for bar code on paper or screen. GM875 bar code reader module is an advanced bar code decoding algorithm which developed on image recognition algorithm, can easily and accurately read bar code, simplify secondary development. GM875 works stable in dark and large temperature range. Features: High-precision small code reading (1D: 3mil, 2D: 5mil) high speed reading High-contrast reading (15%) High motion tolerance performance Specification: Sensor: CMOS Pixel: 640x480 Lighting: White Light(3000K) Collimation: Green Light(527nm) Read Code Type: 2D: QR Code, Data Matrix, PDF417, Mini PDF417, Mini QR, , etc 1D: -13, -8, UPC-A, UPC-EM ISSN, , CodaBar, Code 128, Code93, ITF-14, ITF-6, Interleaved 2 of 5, Industrial 2 of 5, Matrix 2 of 5, GS1 Databar(RSS), Code 39, Code 11, -Plessey, etc. Accuracy of reading: 1D: 3MIL(Code39, CODE128, EAN13), 2D: 5MIL(QR, , PDF417) Viewing Angle: Horizontal 42, Vertical 32 Contrast: 15% Depth of Field: 30-320mm Bar code sensitivity: Pitch 60, Tilt 360, Skew 60 Interface: TTL-232, USB Prompting mode: Buzzer, LED Operating Voltage: 5V Current Operating Current: 250mA(Max) Rated power consumption: 850mW(Max) Standby Current: 20mA(Typical) Startup time: 250mS (Typical) Test conditions: environment temperature =23; environment illumination =300 ; Test conditions: Test distance = (minimum depth of field + maximum depth of field) /2; environment temperature =23; environment illumination =300 ; Material: PCB+Plastic+Metal colour: Black Package Contents: 1 x QR Code Reader Module 2 x 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.