Label and receipt printersENERGY STAR certified
Zebra ZT421
140 ppm mono label printer.
Speed
140
pages a minute
Color
Mono
Thermal transfer
Electricity a year
4.1 W
power in sleep; no annual figure certified
Duplex
No
automatic two-sided
At 140 pages a minute, the ZT421 is faster than 349 of the 438 label and receipt printers certified, and 88 are faster.
- Maker
- Zebra
- Model
- ZT421
- ENERGY STAR type
- Printers
- Marking technology
- Thermal transfer
- Color
- Monochrome
- Speed
- 140 pages a minute
- Size format
- Small
- Automatic duplex
- No
- Power in sleep
- 4.14 W
- Power in standby
- 0.08 W
- Default delay to sleep
- 0 min
- On the market since
- Oct 2019
- ENERGY STAR certified
- 1 Jul 2018
Certified under the same record
The maker lists these as the same machine or a variant of it: ZT411CN, ZT411, ZT421CN.
Source: ENERGY STAR certified imaging equipment dataset, US EPA, record 2339544, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the ZT421
Certified label and receipt printers from other makers, same color class, within 20% of its speed.
| Model | Type | Speed | Certified |
|---|---|---|---|
| SEWOO SLK-TS200 | Mono, Thermal transfer | 130 ppm | May 2024 |
| Woosim systems WSP-R350 | Mono, Direct thermal | 120 ppm | Jul 2021 |
| Toshiba 6180-*** | Mono, Direct thermal | 166 ppm | Aug 2025 |
| Toshiba TRST-P4**-****-**** | Mono, Direct thermal | 166 ppm | Dec 2025 |
Zebra
More Zebra label and receipt printers
| Model | Type | Speed | Certified |
|---|---|---|---|
| GK420d | Mono, Direct thermal | 50 ppm | Oct 2013 |
| GK420t | Mono, Thermal transfer | 50 ppm | Oct 2013 |
| GT800 | Mono, Thermal transfer | 50 ppm | Nov 2013 |
| ZD120 | Mono, Direct thermal | 60 ppm | Oct 2018 |
| ZD220d | Mono, Direct thermal | 60 ppm | Dec 2023 |
| ZD230t | Mono, Direct thermal | 60 ppm | May 2019 |
| ZD411 | Mono, Thermal transfer | 60 ppm | Mar 2022 |
| ZD421 | Mono, Direct thermal | 60 ppm | Aug 2017 |