| Product Type | Industrial Label Printer |
| Model | TJ4121TN |
| Manufacturer | Brother |
| Print Technology | Thermal Transfer / Direct Thermal |
| Print Resolution | 300 dpi |
| Max Print Speed | 7 inches per second |
| Display | Color Touch Panel |
| Weight | 18.7 lbs (8.5 kg) |
| Form Factor | Desktop – Industrial |
| Power Requirements | 100 - 240V AC, 50/60Hz |
| Processor | 32-bit RISC CPU |
| Memory | 256MB RAM, 256MB Flash |
Brother TJ4121TN Industrial Label Printer, 300dpi, 7ips, Peeler/Rewind

Key Benefits
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- Offers high-performance industrial-grade printing with 300 dpi accuracy and fast output speeds, ideal for demanding environments.
- Equipped with versatile connectivity options and peeler/rewind features to streamline integration and improve operational efficiency.
- Comes with a 2-Year Premier Warranty and TAA compliance, ensuring long-term value and adherence to government procurement standards.
Product Overview
The Brother TJ4121TN industrial label printer delivers consistent, 300 dpi high-resolution printing designed for demanding industrial applications. With a print speed of 7 inches per second and features like an integrated peeler and rewinder, it supports efficient label processing. Its robust connectivity options—LAN, USB, Host-USB, serial, and WLAN—enable seamless integration into existing IT environments. A color touch panel simplifies user interactions, making setup and maintenance more intuitive. Offering TAA compliance, versatile power input, and backed by a 2-year Premier Warranty, the TJ4121TN is a reliable choice for scalable label printing in industrial settings.
Specifications
Product Overview
Wireless Features
| Wi-Fi Standards | IEEE 802.11a/b/g/n |
| Wi-Fi Frequency Bands | 2.4GHz / 5GHz |
| Antenna Type | Internal |
| Security Protocols | WEP, WPA/WPA2, WPA-PSK/WPA2-PSK |
Compliance & Origin
| Country of Origin | Taiwan |
| TAA Compliant | Yes |
| Certifications | FCC, CE, UL, cUL, RoHS |
| Warranty | 2 Years Premier Warranty |
Advanced Security Features
| Access Control | Password protected user interface |
| Network Protocol Security | HTTPS, SNMPv3, SSL/TLS, 802.1x authentication |
Interfaces
| USB 2.0 Type B | 1 port |
| Serial (RS-232C) | 1 port |
| Ethernet (LAN) | 10/100BASE-TX |
| USB Host (Type A) | 2 ports |
| Wireless LAN | 802.11a/b/g/n (dual band) |
| Bluetooth | |
| Parallel Port | |
| GPIO Interface | Yes |
Physical & Environmental
| Width | 9.76 inches (248 mm) |
| Depth | 10.79 inches (274 mm) |
| Height | 17.17 inches (436 mm) |
| Operating Temperature | 41°F to 104°F (5°C to 40°C) |
| Storage Temperature | -4°F to 140°F (-20°C to 60°C) |
| Operating Humidity | 25% to 85% RH (non-condensing) |
| Storage Humidity | 10% to 90% RH (non-condensing) |
| Enclosure | Metal industrial housing |
Cloud Management & Licensing
| Management Interface | Web-based utility and Brother SDK |
| Cloud Support | Brother b-guard and PrintSmart solutions |
| Driver Support | Windows, Linux, and ZPL II/CPCL compatibility |