Zebra ZT421 Industrial Barcode Printer (Non-RFID)

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  • Zebra ZT421 Industrial Printer (ZT421)
  • Zebra ZT421 Industrial Printer (ZT421)
  • Zebra ZT421 Industrial Printer (ZT421)
  • Zebra ZT421 Industrial Printer (ZT421)
  • Zebra ZT421 Industrial Printer (ZT421)


Keep critical operations moving with Zebra's durable ZT400 Series printers constructed with an all-metal frame. The Zebra ZT421 Industrial RFID Printer features advanced technology—including a large color touch display and versatile connectivity options—these printers take performance to a new level and are adaptable for customers' evolving needs. Intuitive to integrate and operate, they feature Zebra's Print DNA software powered by Link-OS to deliver unparalleled intelligence and innovation for exceptional performance and simplified remote manageability. Easily replace legacy printers using ZPL, EPL or non-Zebra command languages.

Whether you are using a Zebra or a competitive printer, you can use the same label formats and applications with the ZT400. Support for both EPL and ZPL makes it easy to migrate from another Zebra desktop printer.

The side-loading supplies path makes loading simpler, faster, and more intuitive.

Constructed using a bi-fold door, these printers are designed to easily fit in space-constrained environments.

With the Network Connect option, ZT400 printers can be connected directly to Industrial Ethernet network without any additional equipment.


Features & Benefits:

  • Print Methods: Thermal transfer and direct thermal printing
  • Construction: Metal frame and bi-fold metal media cover with enlarged clear viewing window
  • Side-loading supplies path for simplified media and ribbon loading
  • Thin film printhead with E3™ Element Energy™ Equalizer for superior print quality
  • Communications: USB 2.0, high-speed, RS-232 Serial, 10/100 Ethernet, Bluetooth 4.1, Dual USB Host
  • 4.3-inch color touch display with intuitive menu for quick operation and settings management

There are two printers in the ZT400 Series: the ZT411 and the ZT421. Both printers share the same internal mechanical components, electrical components and control board. The primary difference between the two printers is the print width and maximum print resolution.




Maximum print width



Maximum print speed

14”/356 mm per second

12”/305 mm per second

Print resolution

203, 300, 600 dpi/8, 12, 24 dots per mm

203 and 300 dpi/8 and 12 dots per mm


Ordering Options:

  • ZT42162-T010000Z - TT Printer ZT421; 6", 203 dpi, US Cord, Serial, USB, 10/100 Ethernet, Bluetooth 4.1/MFi, USB Host, EZPL
  • ZT42163-T010000Z - TT Printer ZT421; 6", 300 dpi, US Cord, Serial, USB, 10/100 Ethernet, Bluetooth 4.1/MFi, USB Host, EZPL

Accessories & Parts:

What comes in the box?

  • Printer
  • Power cord
  • Documentation (safety guide and warranty card)

What media handling options are available for the ZT400 series?

The ZT400 series media handling options include:

  • Rewind: internally rewinds a full roll of printed labels on 3” core, or peels and rewinds liner (Factory installed only)
  • Peel: A front mount, passive peel option
  • Peel: Liner take-up option – additional full roll liner take-up spindle accommodates standard printer base
  • Cutter: A front mount guillotine cutter and catch tray, 1” I.D. Core Media Supply Hanger

What is the maximum print width of ZT421 Printer?

The maximum print width of Zebra ZT421 printer is 6.6 in./168 mm.

What are the connectivity options?

In addition to standard USB, serial, Ethernet, and Bluetooth, the ZT400 Series has optional:

  • Parallel (Bi-directional interface)
  • Ethernet
  • Applicator interface

Can I print in direct thermal mode with a ZT421 Printer?

Yes, the Zebra ZT421 Printer can be configured to print in direct thermal mode.

What is the standard warranty for the Zebra ZT421 printer?

The Zebra ZT421 printer is warranted against defects in workmanship and materials for a period of 2 (two) years from the date of shipment.

Does the printer support USB Host?

Yes, we offer two standard USB Host ports, which open a number of new capabilities utilizing the printer, not an additional client, to locally manage files, input data and configure the printer. USB mirror is ideal for local, fast replication of firmware, files and configurations for ease of setup and maintenance.

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Product Information

  • Multiple connectivity options
  • Built to handle a wide range of applications
  • Dual USB host ports for added flexibility
  • Large color touch display
  • Backward compatible with virtually any printer
  • Easy media and ribbon loading
  • Space-saving design for an easier fit
  • Ethernet connectivity
  • Pair devices and access information at a touch
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    Additional Information

    Air Protocol:
    UHF EPC Gen 2 V1.2/ISO 18000-63
    USB, Ethernet, WiFi, Bluetooth
    Operating Temperatures:
    Thermal transfer: 40° to 104°F/5° to 40° C, Thermal direct: 32° to 104° F/0° to 40° C
    19.5" x 13.25" x 12.75" (495 mm x 336 mm x 324 mm)
    40 lb (18.14 kg)
    Download Data Sheet:
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