GM69Pro can read 50+ codes type, including bar code and qr code and OCR passport. It use 1280 x 800 CMOS, can read high density code, have USB and UART interface. USB wired barcode scanner to capture 1D, 2D code on labels, paper, mobile phone or computer. High-efficiency recognization and high upload speed for improving your working efficiency. With buzzer for reminding you that the scanning successfully or not. Compatible with USB and UART interface. Over 180 configurable options. Macro support replace a string in the bar code with another. Programmable preamble postamble and termination strings. Superior reading performance utilizing advanced decoding algorithms. Interface: USB(USB-KBW,USB-COM,HID-POS),TTL-232 Image sensor: CMOS, Global Pixel: 1 million pixel Resolution: ≥3mil/0.076mm (PCS90%,CODE 39) Read Mode: Manual Mode,Induction Mode,Continuous Mode Prompting mode: LED, Buzzer Depth of Field: 40mm~900mm (different bar code range) Decode speed: 65CM/S Contrast: ≥20% Scanning angle: Test Conditions:CODE39,10mil/0.25mm,PCS90% Roll: ±360°, Pitch:±60°, Skew: ±55° Viewing Angle: H:42°V:27°opposite angles: 49° Operating Voltage: DC 5V Current: 200mA(Average Work), 95mA(Standby), 38mA(Sleep) Operating Temperature: -20℃~+50℃ Storage Temperature: -40℃~+60℃ Operating Humidity: 5%~95%(Non-Condensing) Environmental Light: 0~100000LUX Color: Black Material: plastic Package Contents: 1 * Barcode Scanner 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.