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Zebra ZD421, Direct Thermal, 203dpi, Wi-Fi, Bluetooth, USB, USB Host, Modular Connectivity Slot

SKU: 

ZD4A042-D0EW02EZ

With Bluetooth and NFC connectivity alongside USB and USB host ports, the Zebra ZD4A042-D0EW02EZ is a direct thermal desktop printer that prints monochrome labels and receipts at 203 dpi and up to 5.98 in/s across a 4.09-inch print width. It handles media up to 4.25 inches wide and 39.02 inches long on rolls up to 5 inches in diameter, accepting die-cut, continuous, black mark, fanfold, tag stock, wristband and gap media types. On-board memory stands at 256 MB SDRAM with 512 MB of flash storage, and a real-time clock is included. Language emulation covers ZPL, ZPL II, EPL, EPL II, XML, ZBI and EZPL, with iOS, Android and PC platform support. The dual wall frame chassis weighs 2.98 lb and measures 7 in wide by 8.7 in deep by 5.9 in tall, operating between 39.9°F (4.4°C) and 105.8°F (41°C). EU and UK power cables ship in the box alongside a USB cable and power adapter, and the unit carries Energy Star qualification.
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Description
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The Zebra ZD421 SecureFlex Printer is a compact, professional-grade desktop label printer engineered for reliable on‑demand direct thermal printing in retail, healthcare, logistics, and light manufacturing environments. Designed to deliver high-resolution output for barcodes, asset tags and shipping labels, the ZD421 combines precise 300 dpi printing with flexible connectivity options — including USB, USB Host, Bluetooth 5.2 and Wi‑Fi 802.11ax — plus Link‑OS support and broad firmware compatibility (ZPL II, EPL2, PDF Direct). Its OpenACCESS loading, robust dual‑wall frame and built‑in sensors streamline media handling while ENERGY STAR certification and an optional battery make it suitable for both fixed and mobile desktop workflows.

Key Features

  • High‑resolution output: 300 dpi print capability provides sharp text, barcodes and fine graphics for demanding label applications.
  • Flexible connectivity: USB 2.0 and USB Host plus Bluetooth 5.2 and Wi‑Fi 802.11ax enable easy integration with desktop and networked systems.
  • Reliable media handling: OpenACCESS design, full‑width movable reflective (black mark) and multi‑position transmissive (gap) sensors reduce setup time and feed errors.
  • Compact, durable design: Dual‑wall frame construction and ENERGY STAR certification deliver consistent operation and energy efficiency in busy workspaces.
  • Enterprise compatibility: Link‑OS platform with ZPL II, EPL2, PDF Direct and Print DNA support simplifies deployment, management and secure printing.

Specifications

  • Brand: Zebra
  • Product Reference: ZD4A043-D0EX02EZ
  • Product Type: Desktop label printer
  • Print Technology: Direct thermal (optional thermal transfer on some models)
  • Print Resolution: 300 dpi (optional 203 dpi available on other SKUs)
  • Maximum Print Width: 108 mm
  • Maximum Print Speed: 102 mm/s
  • Maximum Media Width: 108 mm
  • Maximum Roll Diameter: 127 mm
  • RAM: 256 MB
  • Flash Memory: 512 MB
  • Interfaces: USB 2.0, USB Host (optional Ethernet, Serial, Wi‑Fi, Bluetooth field options)
  • Wireless Connectivity: Bluetooth 5.2; Wi‑Fi 802.11ax
  • Sensors: Black mark (reflective) sensor; gap (transmissive) sensor
  • Real Time Clock: Yes
  • Printer Languages / Firmware: ZPL II, EPL2, XML, ZBI, PDF Direct
  • Operating System: Link‑OS
  • Dimensions (Direct Thermal): 220.8 mm L x 177.5 mm W x 150.7 mm H
  • Weight (Direct Thermal): 1.35 kg
  • Included Items: USB cable, AC power supply, power cord(s) (EU, UK variations)
  • Energy / Compliance: ENERGY STAR certified; RoHS compliant
  • Warranty: Two‑year standard warranty

Main Features

  • Equipment Format: Desktop

  • Connection: USB, Bluetooth

  • Printing Technology: Direct Thermal

Technical Specifications
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Technical Information
Recommended Use Label/Receipt Print
Print Color Capability Monochrome
Maximum Mono Print Speed 5.98 in/s
Maximum Print Resolution (dpi) 203
Maximum Print Width 4.09"
Real Time Clock Yes
Application/Usage Desktop
Features
  • Status Indicator
  • Dual Wall Frame
Mobile Device Printing Yes
Connectivity Technology Wired
Print Technology Direct Thermal
Memory
Standard Memory 256 MB
Memory Technology SDRAM
Flash Memory 512 MB
Interfaces/Ports
USB Host Yes
USB Yes
Network & Communication
Bluetooth Yes
Near Field Communication (NFC) Yes
Media Types & Handling
Media Type
  • Label
  • Receipt
  • Roll Fed
  • Fanfold
  • Die-cut Label
  • Continuous Label
  • Black Mark
  • Tag Stock
  • Continuous Paper
  • Wristband
  • Gap
Maximum Roll Diameter 5"
Maximum Label Width 4.25"
Maximum Label Length 39.02"
Fonts & Emulation
Language Emulation
  • ZPL
  • EPL
  • ZPL II
  • EPL II
  • XML
  • ZBI
  • EZPL
Power Description
Power Source AC Supply
Environmental Conditions
Operating Temperature 39.9°F (4.4°C) - 105.8°F (41°C)
Operating Relative Humidity 10% - 90%
Storage Temperature -40°F (-40°C) - 140°F (60°C)
Storage Relative Humidity 5% - 95%
Physical Characteristics
Height 5.9"
Width 7"
Depth 8.7"
Weight (Approximate) 2.98 lb
Miscellaneous
Power Cable Localization
  • EU
  • UK
Cables Included
  • AC
  • USB
Power Adapter Included Yes
Platform Supported
  • iOS
  • Android
  • PC
Energy Star Yes
Documents
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Product document mod-zd421-zebra-label-printer-datasheet.pdf ZD4A042-D0EW02EZ  (PDF) Product document mod-zd421-zebra-label-printer-user-manual.pdf ZD4A042-D0EW02EZ  (PDF) Product document zd421-spec-sheet-en-us.pdf ZD4A042-D0EW02EZ  (PDF)