Follow Us On: YouTube Twitter Facebook
A world leader in automatic data capture technology and the inventor of the QR code®

  QS20H 2D

2D Code Direct marking scanner

  • Full adjustment functions
  • Best reading set by multiple-choices
  • Easy setting with a mouse
  • Efficient setup in limited space

Excellent reading capability

The QS20H can read standard QR Code with approximately 2,000 characters (numeric), thus creating a wide range of applications using large portable data files. Additionally, the QS20H reads Micro QR Code, PDF417 and MaxiCode, as well as linear bar codes.

Enhanced reading abilities with triple LED pointer

The triple LED pointer shows the center and the range of the reading area. This allows you to read the target symbol easily. The QS20H has been designed to accommodate fluctuations in ambient light, which enables increased reading ability in any environment.

Capable of reading high density bar codes omni-directionally

Allows you to read various types of bar codes (UPC/EAN, Code 39, NW7, ITF, Code 128) in all directions. The QS20H can read high density bar codes with narrow 0.15mm bars to bars that are wider than the reading window.

Type QS20H-I (Standard) QS20H-HD (High-Density)
Model QS20H-I-R(RS-232C Type) QS20H-I-U(USB Type)(1) QS20H-HD-R(RS-232C Type) QS20H-HD-U(USB Type)
Scanner Readable codes 2-dimensional codes QR Code, Micro QR Code, PDF417, MaxiCode, DataMatrix(ECC200)
Bar codes EAN-13/-8(JAN-13/-8), UPC-A/-E, Interleaved 2 of 5, CODABAR (NW-7), CODE39, CODE128 (EAN-128)
Resolution 2-dimensional codes 0.25mm 0.167mm
Bar codes 0.15mm 0.125mm
Image capture Loaded Unloaded
Standard reading position 75mm 50mm
Pointer Triple pointer
PCS value not less than 0.45
Skew Angle 360°
Angle ±35°
Communications Communication system RS-232C USB1.1compliant RS-232C USB1.1compliant
Communication speed 115.2Kbps Max. - 115.2Kbps Max. -
Connector I/F D-sub9 pin (Male) USB TypeA D-sub9 pin (Male) USB TypeA
Power Power supply original AC adapter Supplied from the connection target original AC adapter Supplied from the connection target
Environment Requirements Temperature - 0 to 40°C
Humidity - 10 - 85%RH (without dews)
Illumination - 20 - 10,000lx (Fluorescent lamp in daytime or less)
Weight (excl. cable) Approx. 135g
  1. 1. Connection may not be possible due to the type of PC or USB-HUB being used. Prior confirmation of connection compatibility is required.


QD20 Option list

Setting Software

  • Oblique illumination (Shower)
  • Oblique illumination (Low angle)
  • Coaxial oblique illumination
  • Transparent illumination

Hang strap from ceiling

  • H-QS20H
    • Desktop stand/wall stand
    • Reads a slip or a work by holding
    • Flexible arm for various holdings


  • Exclusive AC adapter (RS-232C type only)
  • Driver CD-ROM (USB type only)
  • Instruction manual