| Model | TJ4121TN |
| Product Type | Industrial Label Printer |
| Printing Technology | Thermal Transfer |
| Print Resolution | 300 dpi |
| Maximum Print Speed | 7 inches per second |
| Print Color | Monochrome |
| Display Type | Color Touch Panel |
| Display Size | 4.7 Inch |
| RAM | 128 MB |
| Form Factor | Desktop Industrial |
| Weight | 9.4 kg |
| Power Supply Type | Internal Power Supply |
| Input Voltage | 100 - 240V AC, 50/60Hz |
| Warranty | 2 Years Premier Warranty |
Brother TJ4121TN 4.7" Industrial Label Printer, 300dpi, USB/LAN

Key Benefits
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- Industrial-grade build with peeler and rewinder supports high-volume, continuous operation.
- Extensive platform support and rich interface options simplify integration into varied enterprise systems.
- 2-year Premier Warranty ensures dependable long-term performance and reduced maintenance risk.
Product Overview
The Brother TJ4121TN industrial label printer delivers high-resolution, 300 dpi thermal transfer printing at speeds up to 7 inches per second, ideal for demanding environments such as warehouses and production lines. Its color touch panel offers intuitive controls, while integration is streamlined with full USB, Host-USB, LAN, and WLAN connectivity and support for major operating systems including Windows, macOS, and Linux. The built-in peeler and rewind feature is optimized for high-output workflows. With 128 MB of RAM, the printer ensures fast job handling. The compact and durable design is Energy Star and TAA compliant, backed by a 2-year Premier Warranty to support high uptime and productivity in industrial settings.
Specifications
Product Overview
Wireless Features
| Wireless LAN | Yes |
| Wireless Protocols Supported | 802.11a/b/g/n (via WLAN module) |
Compliance & Origin
| ENERGY STAR Certified | Yes |
| TAA Compliant | Yes |
| Country of Origin | Taiwan |
| Certifications | CE, FCC Class A, UL, cUL |
Advanced Security Features
| Network Security Protocols | WEP, WPA/WPA2, WPA2-Enterprise, 802.1x authentication |
| Access Control | Password-protected admin interfaces |
Interfaces
| USB Port | Yes |
| Host USB Port | Yes |
| LAN (Ethernet) | Yes |
| Serial Port | Yes |
| Data Interfaces | USB, Host-USB, LAN, WLAN, Serial |
Physical & Environmental
| Width | 9.76 Inch |
| Depth | 10.79 Inch |
| Height | 17.17 Inch |
| Operating Temperature | 41°F to 104°F (5°C to 40°C) |
| Storage Temperature | -40°F to 140°F (-40°C to 60°C) |
| Operating Humidity | 20% to 85% RH (non-condensing) |
| Storage Humidity | 5% to 85% RH (non-condensing) |
Cloud Management & Licensing
| Operating System Support | Windows, Mac OS X, Linux (Red Hat, Debian) |
| Remote Management | BarTender, ZPL/300dpi command emulation |
| Emulation Support | ZPL2, EPL2, DPL, FBPL |