Black Box TL421A
4-Port Modem Splitter (RS-232 on RJ-45)
The Black Box TL421A 4-Port Modem Splitter provides a reliable, affordable solution for sharing a single modem across four terminals. Its compact design and RJ-45 compatibility make it easy to implement in a variety of networking environments, helping you save on hardware and line costs.
Features :
Designed for ease of use, this modem splitter features four RS-232 ports over RJ-45 connectors, allowing multiple devices to share a single modem connection seamlessly. By consolidating modem lines, it minimizes hardware expenses and simplifies management, making it ideal for environments where space and budget are considerations.
Advanced Options :
Its robust construction ensures dependable performance, enabling smooth data transmission between terminals and the modem. The splitter’s ability to maintain signal integrity across all connected devices makes it a practical solution for businesses looking to optimize their communication infrastructure.
Product Key Features
- Four ports for splitting modem signals, enabling multiple terminal connections
- RS-232 communication protocol over RJ-45 connectors for easy integration
- Compact, space-saving design suitable for various setups
- Reduces the need for multiple modems and lines, saving costs
- Simple to install and configure for efficient terminal sharing
Reliability & Performance :
The TL421A ensures stable and consistent RS-232 communication across all connected terminals. Its reliable design eliminates the need for multiple modems, reducing complexity and potential points of failure while maintaining high-quality signal integrity.
Key Features :
- Four RS-232 ports over RJ-45 connectors
- Supports sharing a single modem among four terminals
- Space-saving, cost-effective solution
- Easy installation and configuration
- Durable construction for long-term use



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