M4 barcode scanner support 1D 2D barcode printed on screen/paper/film. Even those bad condition barcode can also be read. Advanced full thunk capacitance and gold plated optical , we can guarantee high scanning sensitivity in three years. Features: CCD red light USB barcode scanner for 1D, 2Dbarcode printed on paper/film/ screen, such as QR, PDF417, Maxicode; support for Wechat/Alipay mobile payment. Sensor resolution: 640 * 480, scanning speed: 190 times/second. Stable performance, high scanning capacity, even fuzzy/dirty barcode are readable. Support multiple languages, Including English/French/Italian/Italian 142/German/Spanish/Russian (MS)/Russian (typewirter)/Portuguese (Portugal)/Portuguese (Brazil). Advanced full thunk capacitance and gold plated optical , we can guarantee high scanning sensitivity >3 years. Compatible for Linux/ Android/ WindowsXP/Vista/7/8/10/ Windows Server 2003/2008/2010 OS. Indicator light: Red-power on; Blue-Decode successfully. Hardened ABS material, impact-resistant and water-resistant. Professional scanner for express/supermarket/library/warehouse/logistic/store & etc. Specifications: Model: M4 Color: Black Optical Technique Level:V-VI (Aerial Cameras) Code Available: 1D, 2D codes printed on Paper/Film/Screen Sensor Resolution: 640 * 480 Scanning Speed: 190 times/second Symbol Contrast: 35% minimum reflection difference Decode Accuracy: 5mil Scanning Angle: Horizontal 72°， Vertical 82° Barcode Capacity: --1D: EAN-8, EAN-13 2 add-on， EAN-13 5 add-on，ISSN, ISBN, UPC-A, UPC-E, Code 39, Code 39 Full ASCII, Code 93, Code 128, EAN128, Codabar, Interleave 2 of 5，etc. --2D: PDF417, MICROPDF417, Datamatrix, QR, Maxicode, Aztec, etc. System Capacity: For Linux/ Android/ Windows XP/Vista/7/8/10/ Windows Server 2003/2008/2010 Depth of Field: code39 5mil(2cm-8cm), code39 8mil(3cm-15cm), EAN13 13mil(6cm-29cm), DM 15mil(2cm-14cm), QR 15MIL(2cm-13cm), PDF417 15mil(6cm-18cm) OCR Character Decode: Could be customized Impact-resistant: Can bear 1.8m/5.9ft free drop Water-resistant: IP54 Interface: USB (Driver Free) Voltage: 5V DC Maximum Current: 293ma Working Current: 168ma Stand-by Current: 80ma Item Size: 16.5 * 10.3 * 6.7cm / 6.5 * 4.1 * 2.6" Item Weight: 122.5g / 4.3oz Package Size: 18.7 * 11 * 7.7cm / 7.4 * 4.3 * 3" Package Weight: 314g / 11.1oz Package List: 1 * Barcode Scanner 1 * Connecting Cable 1 * Clip 1 * User Manual(English) Note: Don't look into the light directly.