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SEALEVEL | USB Serial (Software Selectable) Adapters

SeaLINK+8M.SC

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The SeaLINK+8M.SC (Model 2833) delivers eight individually software-configurable serial ports (RS-232, RS-422, RS-485) through a single USB connection. Designed for industrial-grade reliability, it includes dual USB hub ports, a rugged metal enclosure, and powered serial outputs—making it ideal for high-performance, expandable applications..

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The SeaLINK+8M.SC (Model 2833) is an advanced USB serial adapter engineered for applications that demand flexibility, robustness, and field configurability. This high-density solution offers eight DB9 serial ports, each independently programmable for RS-232, RS-422, or RS-485 operation via software—eliminating manual hardware changes.

Its architecture offloads processing from the host system, making it suitable for simultaneous multi-port communication in demanding environments. Each port maintains its configuration locally, supporting seamless system upgrades or relocations without reprogramming.

The 2833 stands out with its dual integrated USB 1.1 hub ports, supporting additional SeaLINK or standard USB devices. Its metal housing, SeaLATCH-secured USB connection, and included industrial-grade power adapter ensure reliability in harsh or mission-critical deployments. Whether mounted on machinery, panels, or walls, the 2833 is purpose-built for high-uptime and low-maintenance field operation.

  1. Eight ports individually software-configurable for RS-232, RS-422, or RS-485

  2. No jumper or dipswitch setup—complete driver-based configuration

  3. Retains port settings across systems and deployments

  4. State-machine architecture minimizes host CPU load

  5. Up to 921.6K bps high-speed communication per port

  6. USB 1.1 dual hub ports for daisy-chaining devices

  7. SeaLATCH USB Type B connector with secure locking

  8. Powers 5V peripherals through DB9 pin 9 (500mA per port)

  9. Industrial wall-mount power supply (5V @ 6A) included

  10. Rugged metal housing compatible with SeaI/O & Relio footprints

Parameter Value
Model SeaLINK+8M.SC (2833)
Host Interface USB
Number of Ports 8
Serial Interface RS-232, RS-422, RS-485
Connector Type DB9
Configuration Method Software-Controlled
Max Data Rate 921.6K bps
Max Data Distance 50 ft (RS-232), 4000 ft (RS-485)
USB Hub Ports 2 x USB 1.1 Ports
Power Supply 5VDC @ 6A Wall Mount Supply (Included)
Per-Port Output Up to 500mA on Pin 9 (DB9)
USB Connector SeaLATCH USB 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