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SEALEVEL | SeaIO

SeaI/O-420U

Now includes NABL Calibration Certificate.
Rs. 33655.00

The SeaI/O-420U provides 16 optically isolated inputs and 8 SPDT Form C relays for industrial control and monitoring applications. It communicates via USB using Modbus RTU and includes Sealevel SeaLATCH USB port for secure connections..

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  • Detail
  • Special Features
  • Specification

The SeaI/O-420U is a USB-based I/O module offering 16 optically isolated inputs and 8 SPDT Form C relays. The optically isolated inputs are perfect for applications where isolation from high voltages or electrical noise is needed, with an input range of 5-30VDC. The Form C relays provide long-life switching capabilities and can handle DC loads up to 60VDC @ 2A, ideal for controlling a wide variety of devices.

The module communicates over USB using Modbus RTU, ensuring easy integration with computers and control systems. It is powered via 9-30VDC, and removable screw terminals make installation and wiring a breeze. The Sealevel SeaLATCH USB port ensures a secure, metal-to-metal connection with USB cables, preventing accidental disconnections.

For system expansion, the SeaI/O-420U supports up to 246 additional SeaI/O N-series modules, allowing for large-scale industrial applications. The module is housed in a durable enclosure, suitable for industrial environments, and can be mounted on DIN rails or used on a tabletop.

  • 16 Optically Isolated Inputs – Rated for 5-30VDC, perfect for monitoring sensors, switches, and other devices in industrial systems

  • 8 SPDT Form C Relays – Switch up to 60VDC @ 2A, ideal for controlling low-current devices in industrial environments

  • Sealevel SeaMAX API – Supports integration with Windows and Linux systems

  • Sealevel SeaLATCH USB Port – Provides secure connection with metal thumbscrews to prevent accidental disconnections

  • Removable Screw Terminals – Simplifies field wiring and installation

  • DIN Rail or Table Mountable – Flexible installation options for various environments

  • USB Communication – Supports Modbus RTU over USB for easy connectivity to computers and control systems

  • Included USB Cable – Comes with a 6' USB Type A to SeaLATCH USB Type B cable (Item# CA356)

  • Power Input – Operates on 9-30VDC, with optional Sealevel power supply options

  • Expansion Capability – Supports up to 246 additional SeaI/O N-series modules

Parameter Details
Model Number 420U
Form Factor Enclosure
Host Interface USB
Communication Protocol Modbus RTU
Number of Inputs 16
Input Type Optically Isolated Inputs
Number of Outputs 8
Output Type Form C Relays (60VDC @ 2A)
Power Requirement 9–30 VDC @ 2.2W
Expansion Capability Supports up to 246 SeaI/O N-Series Modules
Software Compatibility SeaMAX API (Windows/Linux), Modbus RTU
iOS App Support N/A
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% RH, Non-Condensing
Dimensions (inches) 7.5" (L) x 5.0" (W) x 0.8" (H)