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SEALEVEL | USB Serial Adapters

SeaI/O-641U

Now includes NABL Calibration Certificate.
Rs. 44450.00

The Sealevel 641U SeaI/O USB adapter provides four high-speed RS-232 ports via RJ45 connectors, designed for seamless integration with industrial systems like the Relio R1000, SeaPAC touch PCs, and SeaI/O module stacks. With robust USB connectivity, a high-retention Type B connector, and support for 921.6K bps, it ensures legacy compatibility with modern performance and reliability..

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  • Detail
  • Special Features
  • Specification

The Sealevel 641U is purpose-built for applications requiring multiple RS-232 serial connections over USB in industrial environments. Its four RJ45 ports can connect to serial devices while retaining compatibility with legacy software via standard COM port presentation.
With a state-machine architecture, the 641U reduces CPU load during multi-port operations—ideal for data-intensive environments. Each serial port has integrated LED indicators for data transmission and reception, aiding in real-time diagnostics.
Power can be supplied through either a terminal block or a barrel connector, and the fused supply is routed to pin 5 of each port for convenient peripheral power.
Designed for industrial modularity, the 641U supports RS-485 passthrough for up to 246 SeaI/O expansion modules, enabling advanced I/O configurations like relays, analog I/O, and isolated digital input.

  1. 4-port RS-232 serial adapter with RJ45 connectors

  2. Supports high-speed data rates up to 921.6K bps

  3. LED indicators for Tx/Rx activity on each port

  4. High-retention USB Type B connector for secure cable connection

  5. USB to serial expansion with SeaI/O N-series module support

  6. Power options via barrel connector or terminal block (9–30VDC)

  7. Compatible with standard COM port enumeration

  8. Designed for industrial-grade reliability and seamless SeaI/O integration

  9. Includes 72" USB A-to-B cable (CA179)

  10. RoHS and WEEE compliant

Parameter Value
Model SeaI/O-641U
Host Interface USB
Number of Ports 4
Serial Interface RS-232
Serial Connector(s) RJ45
Max Data Rate 921.6K bps
Max Data Distance 50 feet
Power Requirement 9–30VDC @ 1.5W
USB Powered No (external power required)
USB Specification USB 1.1 Compliant; USB 2.0 Compatible
Dimensions 7.5" (L) x 5.1" (W) x 1.3" (H)
Operating Temperature 0°C to 70°C (32°F to 158°F)
Storage Temperature -50°C to 105°C (-58°F to 221°F)
Humidity Range 10–90% Relative Humidity, Non-Condensing
Communication Chip USB/UART
Extended Temp Option Available upon request
High Retention USB Yes (Type B connector)
Included Accessories 72" USB A-to-B cable (CA179)
Product Family SeaI/O