... : 650nm visible laser diode Nano Support Interfaces: RS232, PS2 keyboard, USB or others Specification Light Source Type: 650nm visible laser diode ... Post code and so on. Support Interfaces: RS232, PS2 keyboard, USB and other interfaces.Scan Mode: Manualtransmission rate: RS232 Baudeate :2400 ... / sec ,Reading angle of elevation: 60 °,Reading angle: 45 ° barcode scanner