Part# 462M-OEM


RS-485 Modbus RTU Interface to 96 Channel TTL Digital Interface


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The SeaI/O-462M-OEM is an RS-485 Modbus RTU interface module providing 96 channels of buffered drive digital I/O. The interface module addresses the 96 channels of I/O as 12 eight-bit ports, each programmable as input or output. Connect up to four industry standard relay racks for PC based control and automation of equipment including sensors, switches, security control systems, and other industrial automation systems.

The SeaI/O-462M-OEM makes the I/O available via dual DB-78 female connectors. For easy connection to relay racks, Sealevel offers a six-foot cable (Item# CA237) that terminates each DB-78 to two industry standard 50-pin IDC connectors. The SeaI/O-462M-OEM is powered from your 9-30VDC source, or select from a variety of Sealevel power supply options.

Communicate with the SeaI/O-462M-OEM using industry standard Modbus TCP protocol or use the Sealevel SeaMAX API software libraries from your application program. Sealevel's SeaMAX software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems.

Expand your I/O network with SeaI/O N-series products. SeaI/O OEM boards are available with Reed and Form C relays, optically isolated inputs, TTL interfaces, A/D and D/A functionality. Up to 246 additional expansion modules can be added using convenient pass-through connectors.

Get a jumpstart on your digital I/O development with The Digital I/O Handbook that will provide helpful information that you will use again and again. Check out Chapter 1 for an overview of logic principles.
Host Interface RS-485
# of Ports 96
Brand/Family SeaI/O
Digital I/O TTL I/O
Number of Inputs/Outputs 96 TTL
Output Specification Sink up to 64mA
Source up to 32mA
Output Power +5V @ 1A (5W) max.
Power Requirement 9-30 VDC @ 2.0W
Operating Temperature 0 - +70C
Extended Temperature Call for Options
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
Dimensions 7.5 (L) x 5.0 (W) x 0.8 (H)
  • • RS-485 Modbus RTU interface
  • • 96 channels of buffered TTL I/O via two DB-78 female connectors
  • • Each 8-bit port individually configurable as input or output
  • • Easily connects to industry standard solid-state relay racks with 50-pin connectors, using optional CA237 cables
  • • Status indicator LEDs for Communication, Fault, and Power
  • • Input power via terminal block or modular connector
  • • Includes four 3/4 metal standoffs with nuts
  • • Sealevel SeaMAX software supports Microsoft Windows and Linux operating systems

DB78 to Ribbon Cable
DB78 to Ribbon Cable


DAQFactory Express
DAQFactory Express

Call For Price

SeaI/O RS-485 Interconnect
SeaI/O RS-485 Interconnect


Terminal Block
Terminal Block


SIO-485.LPCI Kit
SIO-485.LPCI Kit


Modular Adapter
Modular Adapter


Relay Rack - 8-Position Discrete
Relay Rack - 8-Position Discrete


Relay Rack - 16-Position Discrete
Relay Rack - 16-Position Discrete


Relay Rack - 24-Position Discrete
Relay Rack - 24-Position Discrete


Proudly Made in the USA
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