Zebra® QLn420 Mobile Label Printer (Discontinued)

As of: Tuesday, June 17, 2025

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Standard Features

Apple iOS, Android, Windows Mobile and BlackBerry connectivity
Direct thermal printing of barcodes, text and graphics
CPCL, EPL™ and ZPL® programming languages
256 MB Flash memory supports downloadable programs, receipt formats, fonts and graphics (64 MB available for user storage)
PowerPrecision+ 4900 mAh Li-Ion rechargeable battery
Built-in battery charger
RS-232 serial (DB-9F) and USB ports (both support strain relief)
Belt clip for unobtrusive and convenient printing
Black mark and gap media sensing using fixed center-position sensors
Easy-to-use peel and present mode
Label present sensor for issuing labels one at a time
Tear bar for easy dispensing
Center-loading media locking for variable roll widths
“Clamshell” design for easy media loading
Management: Mirror, SNMP, Web server, Profile Manager, AirWatch and Wavelink Avalanche®
Large, easy-to-read LCD control panel (240 x 128 pixels)
LCD can be customized using WML (text and icons)
Printer alerts on the display, help menus
Tolerance of multiple drops from 6' / 1.8 m to concrete
IP43 dust- and water-resistance rating (IP54 with soft case)
400 MHz 32-bit ARM processor
XML support
Supports vertical and horizontal printing
Printers can be used in any orientation
QR barcode links to web-based help pages
Zebra Print Touch simplifies Bluetooth pairing and launches web-based help pages with NFC-enabled devices
Label odometer
NTP (Network Time Protocol) support via WiFi or Ether

Approvals

WARNING: Cancer and Reproductive Harm California Proposition 65

Designed for On-the-Go, Wireless Printing

The Zebra® QLn420 mobile printer performs thermal printing on the go, with easy integration into existing networks and connectivity to popular devices such as Apple iOS, Android, Windows Mobile and BlackBerry. Drop-resistant molding and a tempered-glass display make this printer extremely durable. The 256 MB flash memory enables quick graphic formatting and downloading for customized printing. Easy-tear mode and a serrated strip permits seamless receipt and label dispensing anywhere.

Zebra QLn420 Mobile Printer Specifications

Paper Width:
4.40 in

Paper Thickness:
3.2 mil to 7.5 mil

Paper Diameter (OD):
2.6 in

Paper Roll Shaft:
0.75 in

Resolution:
203 dpi

Memory:
128 MB RAM / 256 MB Flash

Print Width:
4.10 in

Bar Code Symbologies:
Codabar (NW-7), Code 39, Code 93, Code 128, EAN-8, EAN-13, UCC/EAN 128, UPC-A, UPC-E, PDF417, Micro PDF417, QR Code, TLC39

Maximum Print Length:
32 in

Maximum Print Speed:
4 ips

Media Sensors:
Black mark, Gap

Interface:
RS-232 (DB-9F), USB, WiFi, Bluetooth®

Operating temperature:
-4° F to 122° F
(-20° C to 50° C)

Approvals:
CE, UL, TUV, CSA

Physical Characteristics:
Width: 6.5 in
Height: 7.35 in
Depth: 3.25 in
Weight: 2.45 lb

Warranty:
One-year warranty

Parts

Part #	Description

Options

Part #	Description
Accessories & Consumables
181234	Kit, Handi-Mount QLn420 Includes RAM Mount Arm and Base Plate
188145	Paper,Receipt QLn420 DT Direct Thermal, 4 Inch Wide x 975 Inch Long. NON-Perforated, 3.2 MIL Thickness Price per Roll
Cables & Power Supply
181235	Cable, RS-232 PC-DB9 6 foot straight AP DPT QLn420 Zebra
188144	Power Supply,AC ZQ630 US Plugs. Connects The Printer (OR Charging Cradle) TO AC Power To Charge Internal Printer Battery. 100 TO 240 VAC, 50-60 Hz For Zebra ZQ630 and QLn420 Printers
181236	Power Supply, ZQ630 Li-Ion DC/Dc 15-60 VDC adapter (for use with forklifts) Zebra ZQ630 and QLn420
181233	Power Supply, 12-24 VDC For Zebra ZQ630 and QLn420 Printers
Label Stock/Ribbon
181239	Label,4x2 DTL Mobile with Gap 300 LPR 36 RPC QLn420 Zebra
181238	Label,4x4 DTL Mobile with Gap 160 LPR 36 RPC QLn420 Zebra