We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
White industrial label printer with front panel and ports visible

Citizen

Citizen Cl-S521 203 dpi direct thermal label printer USB Ethernet Serial

SKU CH-1ZGB-MDJ57 MPN Cl-S521

Industrial direct thermal label printer at 203 dpi with USB, Ethernet and serial interfaces

  • Print TechnologyDirect Thermal
  • Printer TypeIndustrial
  • Max Resolution(B&W)203 x 203 dpi
  • InterfaceEthernet / Serial / USB
  • Sharp 203 dpi output for clear barcodes
  • Direct thermal printing needs no ribbons or ink
  • USB, Ethernet and Serial ports for flexible integration
  • Industrial build handles high-volume label runs
  • Ready to operate on 100-120 VAC 60 Hz power

Industrial direct thermal printing

The Citizen CL-S521 is an industrial barcode and label printer that uses direct thermal technology at 203 dpi. It connects via Ethernet, USB, or Serial interfaces for integration into existing systems. The unit ships with a power cord and operates on 100-120 VAC at 60Hz. All components are tested and confirmed in working condition.

Suited for ribbon-free label workflows

This printer fits operations that need durable industrial hardware for direct thermal media without ribbons. Buyers who require thermal transfer capability or higher print resolutions should look at alternative models. It is also not intended for colour printing or mobile battery-powered use. The fixed 203 dpi resolution limits fine-detail graphics.

203 dpi direct thermal resolution

The single specification that determines fit is the 203 dpi direct thermal print engine. It dictates label clarity, media compatibility, and the absence of ribbon supplies. Verify that your label formats and durability needs match this resolution and print method before purchasing.

Highlights

  • Sharp 203 dpi output for clear barcodes
  • Direct thermal printing needs no ribbons or ink
  • USB, Ethernet and Serial ports for flexible integration
  • Industrial build handles high-volume label runs
  • Ready to operate on 100-120 VAC 60 Hz power

Specifications

Print TechnologyDirect Thermal
Printer TypeIndustrial
Max Resolution(B&W)203 x 203 dpi
InterfaceEthernet / Serial / USB

Questions about this item

What power supply does the CL-S521 require?

The printer runs on 100-120 VAC at 60 Hz and includes a power cord.

Which interfaces must be connected for the CL-S521 to communicate?

Connect Ethernet (RJ-45), USB or Serial; install the driver and select the matching port in the printer settings.

When should the printhead on the CL-S521 be replaced?

Replace the printhead when labels show missing lines or dead pixels; the platen roller should also be checked for cracks or pits.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.