Product Details


Equipped with a function to compare the registered master data with the read data.

This function enables easy establishment of systems for non-conforming product checking and incorrect labeling checking. Furthermore, the simplified programming software application “ADF Script” makes it easy to edit data freely, including data sorting, extraction and conversion

Category: Tag:

Share this product



Drop impact resistance

Highest standard in the class of 2 m × 60 times
GT20 has a highly durable design to withstand strong impact, so there is nothing to worry about if you drop this scanner

Environmental resistance

P code rating of IP65 achieved
GT20 is recommended with confidence even in the case that it is used under severe conditions, such as at dusty or wet locations

Operating temperature rang

Between -20 and 50°C
GT20 can be used under various types of environment, such as inside cold storage chambers and semi-outdoor areas in plants, expanding the range of use for customers.

Overwhelming reading performance

High-speed reading

Adopting a powerful reading algorithm created exclusively by the manufacturer that developed the QR Code®
Smooth reading that does not cause stress on users contributes to improving work efficiency

LCD screen reading

The original LED lighting control function enables smooth reading of codes displayed on a liquid crystal screen.
GT20 can read Barcodes displayed on a PC or tablet screen, expanding the range of use for customers

Poorly printed label reading

Efficient at reading dirty and blurred codes
GT20 has such a high reading performance that it can read even poorly printed codes very efficiently, so there is nothing to worry about even at a site under severe conditions where codes easily become dirty, delivering “What a high reading performance!”


Quick operations with 360° reading
Users can carry out operations without concern as to the direction of barcodes

Additional features!

Point Scan Mode

GT20 can read only the targeted code indicated by the central cross even when multiple codes exist in the reading area

One-time reading of multi-row barcodes

GT20 can read only the targeted code indicated by the central cross even when multiple codes exist in the reading area

Concatenated QR Code reading

GT20 can read a concatenated QR Code at one time

Outstanding operability

Confirmation of reading

Double LED, buzzer and vibrator incorporated
GT20 allows secure confirmation by “light,” “sound” and“vibration” even in noisy conditions

Among the most lightweight designs in its class

Lightweight body weighing 180 g
The lightweight and compact design can reduce fatigue when used for long periods. Its user-friendly body is highly durable yet lightweight.


With an area guide marker
The marker makes it easy for users to identify the reading area, enabling smooth operation


GT20 has a hook so that it can be hung from the ceiling together with other jigs when used at plant lines, etc.
Considerations only possible by Denso Wave, expanding the range of use for customers

Code lock

The connector cover, which is resilient against becoming detached and breaking, firmly locks the cord.
The body is not the only durable part. DENSO Wave paid meticulous attention to even the shape of the connector cover and achieved robustness in every detail.

Data entry to smart devices is now easier, quicker and more accurate

Magic Key

Work can become more efficient by allocating a convenient function to the Magic Key.


  • Data re-transfer mode – Previously sent data is re-transferred every time the Magic Key is pressed.
  • Designated character transfer mode – Predetermined characters are sent every time the Magic Key is pressed.
  • Read code switching mode – Two predetermined read codes are alternated every time the Magic Key is pressed

Configuration software

Free software applications“Scanner Setting” and “Scanner Setting 2D” are included, allowing easy configuration of the reading condition, data format, etc. according to the object to be read.
These applications providing convenient functions can reduce customers’ work load concerning application development.

Image capture

Image shooting possible
When a non-conforming product is detected on a plant production line, for example, the image of the product can be captured with GT20 on site and sent to its host



  • Scanner Method Area Sensor
  • Readable codes
  • 2D Code QR code, Micro QR code, SQRC, iQRcode, Data Matrix (ECC200), PDF417, Micro PDF417, Maxi code, Aztec, GS1 Composite
  • Barcodes EAN-13/8 (JAN-13/8), UPC-A/E, UPC/EAN(with add-on), Interleaved 2 of 5 (ITF), Standard 2of 5 (STF), CODABAR (NW-7), CODE39, CODE93, CODE128, GS1-128 (EAN-128), GS1 Databar (RSS)
  • Minimum resolution
    • 2D Code 0.167mm
    • Barcodes 0.125mm
  • Marker Area guide marker
  • PCS value not less than 0.30
  • Angle ±50°
  • Skew angle 360°
  • Image capture BMP, JPEG output, thumbnail view
  • Scanning confirmation Confirmation LED (Blue, Green, Red), Buzzer (with 3-level volume control and 3-level tone control)
  • Communication interface Method
    • GT20Q-SM(U) – USB, Connector USB (A type)
    • GT20Q-SM(R) – RS-232C, Connector Dsub-9S
  • Cable 2m 2m, 5m
  • Power supply
    • GT20Q-SM(U) – Supply from the connection(2)
    • GT20Q-SM(R) – Directed AC adapter
  • Environment requirements Protection rating IP65
  • Drop resistance(3) 2.0 m × 60 times on a concrete floor
  • Operating temperature -20 to 50℃
  • Operating humidity 10 to 90% RH (without dews)
  • Weight (excl. cable) Approx. 180 g
  • Two methods are supported: a USB keyboard interface and a USB-COM interface. The factory default is a USB keyboard interface for GT20B and a USB-COM interface for GT20Q.
  • Please check the connection beforehand because this type of connection may not be possible depending on the model of the PC or USB hub.
  • Result obtained in a test under regular temperature is shown and not meant as a guarantee

Warranty & Return

Warranty & RMA Information:

  • Warranty period varies by Manufacturer and Product Range
  • Contact us for Warranty specifics for your product
  • Contact our RMA department to requesting an RMA (310) 837-5888
  • The serial number of your defective product must be provided before we can process the RMA. Serial number can be found on the product label.
  • Upon submittal of an RMA request, an email will be sent to the email address provided with instructions on returning the defective product/s.
  • Shipping: The customer will only pay for incoming shipment Manufacturer will pay for return shipment (Standard ground service). Charges may apply for expedited shipping.
  • Repair turn around time varies by Manufacturer and Product Range.

Non-DOA Returns Policy – All products

  1. NO open box returns for non-DOA products. Product box must be clean and undamaged, with no marks of any kind. This includes writing, stamps, or shipping labels, i.e., written RMA numbers. All products must be double boxed.
  2. Original manufacturer’s packaging, both inside and outside must be used. Returns must be complete with all manuals, cables, warranty cards, static bags, etc., just as the customer received them.
  3. Customers have 30 days from date of invoice to request a non-DOA return. The RMA number issued is valid for 30 days from issue date.
  4. There will be a restocking fee on returns resulting from customer error.
  5. Non-DOA configured product may not be returned.
  6. Products that show signs of use are not returnable to Peripheral Resources as non-DOA.
  7. For customers on credit terms, credit will be applied to your account when the product is received by Peripheral Resources.
  8. Customer is responsible for freight costs when returning product.

DOA Returns Policy

  1. Refer to manufacturer’s warranties and returns policies.
  2. If the product is tested and the problem is not duplicated, there may be a No Problem Found fee charged to the customer.
  3. For customers on credit terms, credit will be applied to your account when the product is received by Peripheral Resources. Replacement product will be sent once DOA item has been received.
  4. For customers on C.O.D. or credit card status, replacement product will be sent upon receipt of product by Peripheral Resources. If desired, we will send replacement product at your normal C.O.D. or credit card status and you can request a refund or credit to your card when Peripheral Resources receives the returned product.


User Manual GT20Q
Product Brochure