GM65 scanning device module has low power consumption, working current less than 150mA, integrated design and small size. Support all common 1D barcodes and common 2D codes to directly identify the phone screen. Please connect USB, find a barcode or QR code to scan (not the QR code in the manual), on the computer? The place where you can input text will be displayed directly, such as WORD, chat window. Read code system 1D: UPC/, UPC/ with supplementals, BooklandEAN, ISSN, UCC Coupon Extended Code, Code 128, GS1-128, ISBT 128, Code 39, Code 39 Full ASCII, Trioptic Code 39, Code 32, Code 93, Code 11, Matrix 2 of 5, Interleaved 2 of 5, Discrete 2 of 5, Codabar, , Chinese 2 of 5, GS1 DataBar variants, Korean 3 of 5, ISBT Concat.QR code 2D: QR Code, PDF417, Data Matrix Hign-concerned Chemical:none Model Number:GM65 Capture light source:617nm LED Lighting source:6500K LED Reading angle:Rotate 360 Deflection 60 Tilt 65 Scanning angle:34 (horizontal) 26 (vertical) Minimum contrast:30% Resolution: equal 0. 1mm (4mil) Voltage: DC 5V Current: 120mA during scanning / 30mA during standby Interface: USB, URAT Working temperature: Temperature: 0-50 Storage temperature: -40-70 Working humidity: 10% to 80% Ambient light: Ambient light: 0-86,000 lux Colour:As Shown Material:PCB Package Contents: 1 * Module 1 * 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.