RFID printers from Zebra
Key facts
An RFID printer has an integrated reader and encoder. It writes the data, such as an EPC number, to the label chip and prints the label with plain text and barcode. According to Zebra, Adaptive Encoding Technology on the ZT411, ZT421 and ZD621 eliminates complex inlay placement guidelines; the minimum transponder pitch is 16 mm.
The models differ in volume and place of use. The ZT411 and ZT421 are industrial printers with a metal frame; the UHF encoder can be fitted at the factory or on site, and the ZT411 is also available as an on-metal version. The ZD621 RFID suits the workstation, while the battery-powered ZQ511 and ZQ521 print in direct thermal mode right at the point of use. Basics on frequencies and project approach are covered in the RFID overview.
- Printing labels with an RFID inlay and encoding them in the same pass
- High volumes in logistics and production (ZT411 RFID, ZT421 RFID)
- Wide labels up to 168 mm print width (ZT421 RFID)
- Encoding at the workstation or in smaller quantities (ZD621 RFID)
- Printing and encoding at the shelf, the dock or in the vehicle (ZQ511 RFID, ZQ521 RFID)
- Barcode labels without a chip: a standard label printer is sufficient, such as the Zebra ZT411 or ZT421 without RFID
- Capturing and stocktaking goods that are already tagged: that is what RFID readers are for
- HF or NFC transponders: the printers shown encode UHF transponders; HF types are listed under RFID labels
Detailed specifications
| Zebra ZT411 RFID / ZT421 RFID | Zebra ZD621 RFID | Zebra ZQ511 RFID / ZQ521 RFID | |
|---|---|---|---|
| Form factor | Industrial printer with metal frame | Desktop printer | Mobile printer with battery |
| Print method | Thermal transfer and direct thermal | same as left | Direct thermal |
| Resolution | 203 dpi, optional 300 dpi, 600 dpi ZT411 only | 203 dpi, optional 300 dpi | 203 dpi |
| Max. print speed | 356 mm/s (ZT411), 305 mm/s (ZT421) | 203 mm/s (203 dpi), 152 mm/s (300 dpi) | 127 mm/s (draft mode) |
| Max. print width | 104 mm (ZT411), 168 mm (ZT421) | 104 mm (203 dpi), 108 mm (300 dpi) | 72 mm (ZQ511), 104 mm (ZQ521) |
| Media width | 25.4 to 114 mm (ZT411), 51 to 178 mm (ZT421), tear-off or cutter | 15 to 118 mm | 35 to 80 mm (ZQ511), 50.8 to 113 mm (ZQ521) |
| Max. roll diameter | 203 mm, 76 mm core | 127 mm | 51 mm (ZQ511), 57 mm (ZQ521) |
| RFID standards | UHF EPC Gen 2 V2, ISO/IEC 18000-63, RAIN RFID | same as left | same as left |
| RFID encoder | integrated ThingMagic reader/encoder, factory or field installable; transponder pitch from 16 mm | integrated Zebra RE40; transponder pitch from 16 mm | integrated RFID reader/encoder, automatic RFID media calibration |
| On-metal labels | optional on-metal version, ZT411 only, not with 600 dpi | not specified | not specified |
| Interfaces | USB 2.0, RS-232, Ethernet 10/100, Bluetooth 4.1, 2 x USB host; optional 802.11ac Wi-Fi | Ethernet, serial, USB 2.0, USB host; optional 802.11ac Wi-Fi and Bluetooth 4.1 | USB 2.0, 802.11ac Wi-Fi, Bluetooth 4.1 |
| Power | Mains operation | Mains operation with external power supply | 3,250 mAh Li-ion battery, removable, charging via USB |
| Sealing and drops | not specified | not specified | IP54, drops from 2 m to concrete; with exoskeleton IP65 and 3 m |
| Operating temperature | 5 °C to 40 °C (thermal transfer), 0 °C to 40 °C (direct thermal) | 4.4 °C to 41 °C | -20 °C to 55 °C |
| Dimensions | 495 x 269 x 324 mm (ZT411), 495 x 336 x 324 mm (ZT421) | approx. 267 x 203 x 191 mm (L x W x H) | 150 x 120 x 62 mm (ZQ511), 158 x 155 x 67 mm (ZQ521) |
| Weight | 16.33 kg (ZT411), 18.14 kg (ZT421) | 2.5 kg | 0.63 kg (ZQ511), 0.79 kg (ZQ521), with battery |
Source: manufacturer data sheets and product pages, as of October 2026. Subject to change; individual variants may differ. Prices and delivery times are available in the shop.
Variants and accessories
| Model | Class | Max. print width | Resolution | Note |
|---|---|---|---|---|
| Zebra ZT411 RFID | Industrial | 104 mm | 203, 300 or 600 dpi | optionally available as on-metal version |
| Zebra ZT421 RFID | Industrial | 168 mm | 203 or 300 dpi | media width up to 178 mm |
| Zebra ZD621 RFID | Desktop | 104 mm (203 dpi), 108 mm (300 dpi) | 203 or 300 dpi | Zebra RE40 encoder, 4.3-inch colour touch display |
| Zebra ZQ511 RFID | Mobile | 72 mm | 203 dpi | 0.63 kg with battery |
| Zebra ZQ521 RFID | Mobile | 104 mm | 203 dpi | 0.79 kg with battery |
Accessories
- UHF RFID conversion kit for ZT411 and ZT421 for field upgrades
- Optional 802.11ac Wi-Fi card for ZT411 and ZT421
- T10 and T20 label rewinders for the ZD621
- Exoskeleton protective case for ZQ511 and ZQ521: IP65 and drops from 3 m according to the data sheet
- Matching UHF labels, including on-metal: RFID labels
Zebra ZT411 RFID or ZD621 RFID?
| Zebra ZT411 RFID | Zebra ZD621 RFID | |
|---|---|---|
| Form factor | Industrial printer with metal frame | Desktop printer |
| Max. print speed | 356 mm/s | 203 mm/s (203 dpi) |
| Resolution | 203, 300 or 600 dpi | 203 or 300 dpi |
| Max. roll diameter | 203 mm | 127 mm |
| Max. label length | 3,988 mm (203 dpi) | 991 mm |
| On-metal version | optional | not specified |
| Weight | 16.33 kg | 2.5 kg |
Both printers encode the same UHF standards. The ZT411 RFID is designed for high volumes and large rolls, prints faster and is available as an on-metal version. The ZD621 RFID is compact and suits the workstation when smaller quantities are encoded. If you need the same print performance without RFID, the standard Zebra ZT411 or ZT421 is the right choice.
What OPAL adds
Frequently asked questions
Can I upgrade a ZT411 or ZT421 to RFID?
Yes. According to Zebra, the UHF encoder on the ZT411 and ZT421 can be fitted at the factory or on site, and the shop offers a UHF RFID conversion kit for this. The on-metal version is intended for the ZT411 only and, according to the data sheet, can also be upgraded in the field.
Which labels can I encode with these printers?
According to Zebra, all models shown support transponders to UHF EPC Gen 2 V2, ISO/IEC 18000-63 and RAIN RFID. For on-metal labels such as the Confidex Silverline Micro II, the label manufacturer specifies the ZT411 On Metal. Suitable labels are listed under RFID labels.
Do I need to know the exact inlay position in the label?
Not necessarily on the ZT411, ZT421 and ZD621: according to Zebra, Adaptive Encoding Technology eliminates complex RFID placement guidelines. The distance between two transponders must be at least 16 mm.
Can I print RFID labels on the move?
Yes, with the ZQ511 RFID or the ZQ521 RFID. They print in direct thermal mode at 203 dpi, operate from -20 °C to 55 °C according to the manufacturer and are rated IP54. The battery has 3,250 mAh, and connectivity is via USB, Wi-Fi or Bluetooth.
How does the RFID data get from my ERP to the printer?
Print and RFID data come from your labelling software or your ERP, for example as ZPL commands; the shop lists ZPL for the ZD621 RFID and the ZQ models. We set up the connection with you as part of our integration services, with OPAL Labelmanagement™ if required.
Data sheets and manufacturer information
The manufacturer provides data sheets, user guides and configuration guides on the product page. We are also happy to send you the documents directly.
Suitable alternatives
