Barcode Scanner, YOKKAO Automatic Reader High Speed Handheld ID UPC EAN (Black) DOUBLE BUFFER HEADS - With double buffer heads design on scan head to prevent scan screen from breaking, anti-crash and anti-shock. LANGUAGE CHANGING - Please scan the bar code on the manual to change the language output(The United States, France,Germany,Brazil,Spain,Italy,Sweden,Latin America,Belgium, Netherlands,Hungary,Denmark,United Kingdom),universal means the some of the keys in the same places between different keyboard. SCAN RATE - 100 scans per second. Support Port: RS232, Keyboard Wedge, USB. Reading Distance: approx. 2mm-300mm. DECODE TYPE - UPC/EAN, Complement Code of UPC/EAN, Code128, UCC/EAN128, Code39, Code39Full ASCII, Code128Full ASCII, Codabar, Interleaved 2 of 5, Code93, MSI. SETTING OPERATION - Please scan the bar code of restore defaults; KB,USB default; UART 9600, NO,8,1, continuous mode;key trigger;key delay; closed voice; low tone; high tone; volume 1; volume 2; volume 3; volume 4; bit error rate 1/20 million on the manual. Please read it carefully before use it.