Black Box LES421A-R2 Industrial RS-232/422/485 Serial Device Server for Reliable Ethernet Connectivity

Black Box LES400 Series Industrial RS232/422/485 Serial Device Server

The Black Box LES421A-R2 is an industrial-grade serial device server designed to seamlessly connect RS-232, RS-422, or RS-485 serial devices such as PLCs, meters, sensors, and barcode readers to your Ethernet network. Featuring two independent Ethernet ports with autosensing 10/100 Mbps capability, this device ensures network redundancy and reliable data transmission in demanding environments. Its robust construction supports a wide operating temperature range from -40 to +176°F (-40 to 80°C), making it suitable for industrial applications that require durability and stability.
Easy to manage through any web browser, the LES421A-R2 offers flexible configuration options including COM port redirection, TCP server, TCP client, and UDP modes. These modes enable transparent serial data forwarding, compatibility with legacy serial devices, and integration with modern networked systems. The device allows software selection for RS-232, RS-422, or RS-485 communication standards, providing versatile connectivity for various serial interfaces. This flexibility simplifies integration into existing infrastructure and reduces the need for additional hardware or software modifications.
Designed for ease of use, the LES400 series serial device servers are TAA compliant and backed by a one-year Double Diamond warranty, ensuring reliability and support. Whether used in manufacturing, automation, or data acquisition, this device provides a dependable solution for extending serial device connectivity over Ethernet networks, helping streamline operations and improve system integration without the need for intermediate PCs or complex programming.

Features:

• Access a single serial device over Ethernet; configurable for RS-232, RS-422, or RS-485 standards.

• Supports COM port redirection, TCP server, TCP client, and UDP modes for flexible network communication.

• Operates reliably in extreme temperatures from -40 to +176°F (-40 to 80°C).

• Autosensing 10/100 Mbps Ethernet ports ensure optimal network performance.

• Web-based management allows complete configuration and control via any browser.

• Facilitates easy integration of serial devices into Ethernet networks, eliminating the need for intermediate computers.