Kongsberg RSER200-4 (part number 603444)
This is a 4-channel serial communication interface module belonging to the Kongsberg RIO200 remote I/O series, designed specifically for ship automation systems.

core parameters
Project specifications
Part number 603444
Version Rev. 1.0.3/1.0.4/1.0.5
Number of channels: 4 independent serial channels
Interface type RS-232/RS-422/RS-485 (half duplex/full duplex, software configurable)
The maximum communication speed is 115.2 kbps
Optocoupler isolation 1500V AC, each channel is independent
Working temperature -25 ℃~+70 ℃
Power consumption of approximately 5W (RBUS backplane power supply)
Weight approximately 0.34 kg
Installation method: DIN rail, supports hot swapping
Certification IEC 60945/IACS E10
Supported Protocols
Modbus RTU (Master/Slave)
NMEA 0183 (Standard Protocol for Marine Equipment)
Customize ASCII Protocol
Typical Applications
Specially designed for K-Platform ship automation platforms such as K-Chief 600, K-Pos, K-Thrust, etc., it is used to connect third-party serial devices (radar, AIS, depth sounder, GPS, etc.) to the main control system.

A few practical details
USB service port: used for on-site diagnosis and configuration, does not affect normal communication
Orange LED in the bottom left corner: running/error indicator light, lit to indicate module abnormality or self-test failure
3 link channel interfaces+4 field channels, structurally belonging to the RIO200 module family