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SEALEVEL | USB Serial Adapters

SeaI/O-647U

Now includes NABL Calibration Certificate.
Rs. 46101.00

The SeaI/O-647U is a robust USB to 4-port RS-232/RS-485 serial adapter with VersaCom RJ45 connectors. It offers plug-and-play serial expansion for industrial systems like SeaPAC, Relio R1000, or other SeaI/O stacks—making it ideal for OEMs, PLCs, and embedded integration..

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  • Detail
  • Special Features
  • Specification

The SeaI/O-647U makes adding four serial ports simple in industrial and embedded environments. Built with VersaCom technology, each RJ45 port simultaneously supports RS-232 and 2-wire RS-485 signals. Users only need to configure external pinouts, eliminating service complexity.
Designed with performance in mind, the onboard state-machine architecture drastically reduces CPU load during multi-port communication.
Status LEDs are included on each port for real-time feedback, and the adapter supports a blazing data rate of up to 921.6K bps—ideal for high-speed industrial protocols.
Additionally, an RS-485 pass-through port allows I/O expansion using up to 246 SeaI/O N-series modules, unlocking added digital/analog capabilities. The entire system is housed in a rugged enclosure, perfect for wall, panel, or DIN-rail integration.

  • 4 independent RJ45 ports with RS-232/RS-485 interface

  • VersaCom design with active simultaneous RS-232 and RS-485 signal sets

  • 921.6K bps max data rate with ultra-low CPU overhead

  • No jumpers or dip switches—simplified field setup

  • Status LEDs for transmit and receive indicators

  • RS-485 pass-through for expanding up to 246 SeaI/O N-series modules

  • Powered via 9–30VDC terminal block or barrel connector

  • High-retention USB Type B connector for cable stability

  • Compatible with Sealevel’s full range of RJ45 modular adapters

  • Fully enclosed for industrial and panel applications

Parameter Value
Model SeaI/O-647U
Host Interface USB
Number of Ports 4
Serial Interface RS-232, RS-485
Serial Connector(s) RJ45 VersaCom
Max Data Rate 921.6K bps
Max Data Distance 50 feet (RS-232), 4000 feet (RS-485)
Power Requirement 9–30VDC
USB Powered No (requires external power)
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
High Retention USB Yes
Enclosure Type Fully enclosed
Input & Output Type RJ45 (RS-232/485 VersaCom signal selection via pinout)
Expansion Support RS-485 passthrough for up to 246 SeaI/O modules
Product Family SeaI/O