【Versatile Scanning】YESIDO EC21 is a universal handheld barcode scanner capable of reading various 1D and 2D barcodes with high-speed decoding and sensitive response. 【Multiple Interface Options】Offers PS2, RS232, USB, and USB-COM interfaces for wide compatibility with different systems. 【Long Reading Distance】Can quickly read barcode information from up to 10cm away, enhancing efficiency in various scanning scenarios. 【Ergonomic Design】Compact shape, lightweight, and ergonomically designed for comfortable handling during extended use. 【360° Omnidirectional Scanning】Reads barcodes from any angle, allowing for faster and more efficient operation. 【Versatile Code Reading】Supports scanning of paper barcodes, LCD display barcodes, mobile screen barcodes, and inverted barcodes, as well as non-standard barcodes with printing distortions or damage. Specifications: Material: PC+ABS System Interface: RS-232 serial port Input Current: DC 5V/0.15A Resolution: 640*480 Precision: 3.5mil (1mil = 0.0254mm) Cable Length: 1.6M Trigger Method: Manual sensing Indicators: Buzzer, LED indicator 1D Decoding: EAN13, EAN 8, UPC-A, UPC-E0, UPC-E1, Code128, Code39, Code93, Interleaved 2 of 5, Industrial 25, Matrix 2 of 5, Code11, CodeBar, MSI, RSS-14, RSS-Ltd, RSS-Exp, Standard 2 of 5, Plessey, ChinaPost 25, GS1 Composite 2D Decoding: QR Code, Data Matrix (DM), PDF417, Han Xin, Micro PDF417, Micro QRCode, MaxiCode, Aztec Code, Code16K System Interfaces: RS-232 serial port; USB keyboard; USB virtual serial port