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SEALEVEL | USB Serial (Software Selectable) Adapters

SeaLINK+4M.SC

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The SeaLINK+4M.SC (Model 2433) delivers four software-configurable RS-232/422/485 ports in a rugged metal enclosure, with local configuration retention, built-in USB hub ports, and support for data rates up to 921.6K bps—ideal for industrial-grade serial connectivity and deployment flexibility..

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The SeaLINK+4M.SC (Model 2433) simplifies serial connectivity by offering four independently software-configurable ports supporting RS-232, RS-422, or RS-485 standards. Settings are applied through Sealevel’s SeaCOM software, allowing seamless deployment across multiple machines without manual port configuration.

Its durable metal enclosure is designed for industrial environments, and compatibility with SeaI/O and Relio R1000 form factors makes it suitable for a wide range of embedded or wall-mounted applications.

To support multiple devices, the unit includes a 2-port USB hub and provides 500mA of regulated 5V power to each DB9 port via Pin 9—perfect for barcode scanners, receipt printers, and more.

For dependable performance, the adapter features a SeaLATCH USB Type B connector for secure locking, and it ships with a 5V 4A wall-mount power supply.

  • Four software-configurable ports (RS-232, RS-422, or RS-485)

  • No jumper/switch changes required – driver-based interface setup

  • Configuration is retained locally across computers

  • High-speed communication up to 921.6K bps

  • Rugged metal housing suitable for industrial environments

  • Integrated USB hub with two downstream ports

  • SeaLATCH locking USB Type B connector prevents accidental disconnection

  • Power over DB9 (Pin 9) – 500mA per port for peripherals

  • LED indicators for power, data activity, and electrical interface

  • Includes industrial-grade 5VDC @ 4A locking power supply

  • Compatible with SeaI/O and Relio R1000 mounting footprint

  • Optional extended temperature range model available

Parameter Value
Model SeaLINK+4M.SC (2433)
Host Interface USB
Number of Ports 4
Serial Interface RS-232, RS-422, RS-485
Connector Type DB9M (Pin 9 powered)
Configuration Method Software-Controlled
Max Data Rate 921.6K bps
Max Data Distance 50 ft (RS-232), 4000 ft (RS-485)
Power Output (Per Port) 5V @ 500mA via Pin 9
Power Input 5VDC @ 4A (locking wall-mount supply included)
USB Hub Ports 2 x USB 1.1 Downstream
USB Connector SeaLATCH Type B (High Retention)
USB Specification USB 1.1 Compliant; USB 2.0 Compatible
Dimensions 7.5" (L) x 5.1" (W) x 1.8" (H)
Operating Temperature 0°C to 70°C (optional -40°C to 85°C)
Storage Temperature -50°C to 105°C
Communication Chip USB/UART
High Retention USB Yes
Enclosure Rugged Metal
Humidity Range 10–90% Relative Humidity, Non-Condensing
Product Family SeaLINK