Part#: 3730H

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Part#: 3730H Category:

PC/104 16 Reed Relay Output / 16 Isolated Input Digital Interface (10-30V)

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Optimized for sensing 24V, the 3730H PC/104 digital I/O interface provides 16 optically isolated inputs and 16 Reed relay outputs. The inputs protect the PC and other sensitive equipment from spikes and ground loop current that can be generated in industrial environments, while the outputs provide high quality, long-life, low current (10 Watt maximum), dry contact switch closures. Reed relays are well suited for low current applications. The relays are normally open, and close when energized.

The inputs on the 3730H are rated for 10-30V. For 3-13V inputs, order the 3730.

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

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.

Note: This item has a minimum order quantity (MOQ) of 25 units. Please contact your sales representative with any questions.

Additional information

Board Connector

(2) 40-Pin Headers

Contact Current

500 mA

Contact Voltage


Digital I/O

Isolated Inputs, Reed Relay Outputs

Extended Temperature

Call for Options

Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Input Range

10-30 VDC

Host Interface(s)


Number of Inputs/Outputs

16 Inputs16 Outputs

Operating Temperature

0°C to 70°C (32°F to 158°F)

# of Ports


Power Requirement

+5V @ 285mA

Storage Temperature

-50 – +105C

• 16 Reed relay outputs (SPST)
• 16 optically isolated inputs optimized for +24V
• Highly reliable 10VA DIP Reed relays
• 100 million closures at maximum load
• Power (+5V and +12V) and ground provided on connector
• Right-angle connectors available for OEM opportunities, two 40-pin vertical headers standard
• SeaI/O Classic software supports Windows 98, ME, NT, 2000, XP and Vista operating systems
• Software support for DOS, Linux, Windows 3.1 and Windows 95 available


Manual: 3730H


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