QR Code Reader 1.High resolution 2.High sensitivity 3.High reliable Honeywell ... mil) / 0.254 mm (10 mil)System Interfaces:Keyboard Wedge, RS232, Stand Alone Keyboard, USB, IBMIndicators (LED):Blue Steady = unit powered, ready ... ; Yellow Steady = in standPitch, Skew75°, 75° Honeywell MS1690 QR Code Reader