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8208FX USB to 16 Reed Relay Outputs Digital Interface Adapter
8208FX USB to 16 Reed Relay Outputs Digital Interface Adapter

Part# 8208FX

(SeaLINK REL-16)

USB to 16 Reed Relay Outputs Digital Interface Adapter

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This product is classified as legacy and is not recommended for new or high volume designs.

Sealevel will support legacy products through technical and warranty support, software drivers and product manuals. Please contact Sales for further information. For new product designs, we recommend the SeaI/O-440U.

The SeaLINK® 8208FX USB digital I/O interface adapter provides 16 outputs for PC-based control and automation of equipment.

The Reed relay outputs provide high quality, long-life, low current (10 Watt maximum) dry contact switch closures. Our unique serial string naming feature allows multiple USB digital I/O devices to retain their specific identity within the system. Onboard removable screw terminals are provided to simplify wiring connections. A DIN rail mounting option is available.

Sealevel's SeaIO Classic software drivers and utilities make installation and operation easy using Windows operating systems.

To simplify installation and configuration, a printed copy of the USB Digital I/O QuickStart Guide is included with all USB Digital I/O orders.

Important: If you are a previous customer of non-FX SeaLINK digital I/O adapters, you must update your SeaIO driver for proper operation of this 8208FX module. Please read this Support Article for details.

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.
Brand/Family SeaLINK
Host Interface(s) USB
# of Ports 16
Digital I/O Reed Relay Outputs
Number of Inputs/Outputs 16 Outputs
USB Specification 1.1 Compliant
2.0 Compatible
Power Requirement +5V @ 500mA
Contact Voltage 100 VDC/VAC
Contact Current 500 mA
Field Wiring 12 - 30 AWG
Board Connector 5.08mm Screw Terminals
Operating Temperature 0 - +70C
Extended Temperature Call for Options
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
Dimensions 7.1 (L) x 5.3 (W) x 1.5 (H)
  • • 16 Reed relay outputs (SPST)
  • • Highly reliable 10VA DIP Reed relays
  • • Two 16-pin removable screw terminals simplify field wiring
  • • Powered by USB connection
  • • DIN rail mounting option available (Item# DR102)
  • • Includes 6' USB device cable (Item# CA179)
  • • Sealevel SeaIO Classic software supports Windows operating systems

The Digital I/O Handbook
The Digital I/O Handbook


Rackmount Clamp
Rackmount Clamp


The Digital I/O Handbook (*Free)
The Digital I/O Handbook (*Free)


DIN Rail Mounting Clips
DIN Rail Mounting Clips


2U 19 In. Rack Tray
2U 19 In. Rack Tray


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