TTL USB RS232 support: Enables versatile connectivity options for different systems. Automatic sensing: Intelligent detection for fast and accurate scanning performance. 2D barcode scanner: Reads both 2D barcodes and QR codes with high sensitivity. RS232 interface: Compatible with serial communication for easy integration with devices. Mini size: Compact design fits into tight spaces for embedded applications. Specifications Interface Type: USB, Serial Port, TTL, RS232, Virtual Serial Port Type: Embedded Scan Rate: 100 scans per second Dimensions: 61mm x 51mm x 16.4mm Resolution: 640*480 Item Number: ES908 Weight: Approx. 30g Power Supply: 5V or 3.3V Scanning Light Source: White Scan Speed: 1/120 fps Color: White Material: Plastic+Electronic Component Specification: RS232 Package Contents: 1*Embedded scanning 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.