GM861S Reading Distance:5-30cm Contrast x :Greater than 25% Scan Angle x x :Roll:360°Pitch:65°Yaw:65° Viewing Angle:67°(Horizontal)53°(Vertical) Parameter Performance Sensor CMOS Scan Mode 640 x 480 Indicator Light Green lightas read successfully Read Code Type 1D: EAN-13, EAN-8, UPC-A, UPC-EISSN, ISBN, CodaBar,Code 128, Code93, ITF-14, ITF-6, Interleaved 2 of 5,Industrial2of5, Matrix2of5, Code 39,Code11, MSI-Plessey, GS1 Composite,GS1-Databar (RSS) 2D: QRCode, DataMatrix, PDF417 Accuracy of reading x :≥10mil Mechanical/electrical Parameters: Parameter:Performance Interface:TTL-232/USB Size(mm):Diameter 20.9mm Height 6.2mm Weight:10g Prompting mode:LED Indicator OperatingVoltage:3.3V Operation Current:70mA(Max) Standby Current:≤6mA(Typical) Startup time:≤250mS (Typical) material: metal Color as shown Package Contents: 5 x Scan code module 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.