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Black handheld linear imager barcode scanner with red LED illumination

Datalogic

Datalogic QW2120-BK barcode scanner 1D linear imager USB black

SKU CH-72AF-ADT91 MPN QW2120-BK

Handheld 1D linear imager scans standard barcodes at 400 reads per second via USB with patented Green Spot feedback

  • Display resolution4 mils
  • Form factorHandheld
  • Connection optionsCorded
  • Scanning technology1D Linear Imager
  • Supported interfacesUSB
  • Illumination sourceRed LED 610-650 nm
  • Lightweight at 0.26 lb for comfortable all-day use
  • Reads 1D codes at up to 400 scans per second
  • Wide ±65° pitch and ±70° yaw angles capture codes from many positions
  • Green Spot patent gives instant visual confirmation on every good read
  • USB interface draws power from the host with no external supply needed

Entry-Level 1D Linear Imager

The Datalogic QW2120-BK is a new handheld barcode scanner built for retail, light manufacturing, document processing and banking environments. Its linear imager engine reads all standard 1D codes including GS1 DataBar and major postal symbologies. The corded USB interface provides a direct 5 VDC connection to a host system.

Patented Green Spot Feedback

A bright green spot projected on the code confirms a good read without audible beeps, useful in quiet or noisy settings. The scanner decodes at 400 reads per second with a minimum 25% print contrast ratio. The thinner, brighter scan line captures long or truncated bar codes at wide angles without increasing distance.

Scanner Only, Cable Sold Separately

This unit ships without a cable; a compatible USB cable must be sourced separately for operation. The scanner weighs 0.26 lb and measures 6.70" x 2.50" x 2.70". Pitch, roll and yaw tolerances of ±65°, ±45° and ±70° allow flexible presentation scanning.

How it compares

Measured against everything we stock in Handheld Barcode Scanners, at today’s prices. Recalculated every night.

Price $84.99
Cheaper than about 61% of the 1,111 comparable items (median $119.99).

Specifications

Product
Brand nameDatalogic
Model nameQW2100
Part numberQW2120-BK
Product colorBlack
Performance
Scan speed400 reads/sec
Display
Display resolution4 mils
Print contrast ratio (minimum)25%
Connectivity
Connection optionsCorded
Supported interfacesUSB
Power
Supply voltage5 VDC ± 5%
Size & build
Form factorHandheld
Product dimensions6.7 in × 2.5 in × 2.7 in
Product weight0.26 lb (0.12 kg)
Shipping weight0.23 kg
Package size229 × 203 × 102 mm
More details
Scanning technology1D Linear Imager
Illumination sourceRed LED 610-650 nm
Pitch±65 degree
Roll±45 degree
Yaw±70 degree
Drop5 ft (1.52 m)

Questions about this item

Will the scan window on this QW2120-BK need cleaning or replacement over time?

The linear imager uses a red LED at 610-650 nm with no moving parts, so only the external window may need occasional wiping.

What limits continuous scanning on the QW2100 imager?

It reads at 400 scans per second and requires a minimum 25% print contrast ratio, so low-contrast or damaged codes stop reads first.

How much heat or noise does the QW2120-BK produce when running all day?

It draws 5 VDC ± 5% from the USB port with no fan, so heat and audible noise are negligible during extended use.

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