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4x Opto-Isolated Input, 4x Relay Output Board US$65.00

Combo-BRD
4x Opto-Isolated Input, 4x Relay Output Board


This board consists of 4 relay outputs and 4 optically isolated input channels.

The relay outputs have both Normally Open (N/O) and Normally Closed (N/C) contacts rated to 250V AC or 30V DC, both at 5 Amperes. The relays' coils are powered by an external 12V DC power supply that is capable of producing approximately 350mA. (A power supply is not provided with the board. See below for compatible supplies.) The relay coils are controlled using a ULN via the I/O ports of the module. Each of the output port channels has an LED which serves as indicator of the relay output status.

The input channels are bridged wet contacts which are electrically isolated from all other channels and the I/O module. Each input channel has an LED to indicate when a signal is present on the channel. The input channels/relay output connections are by screw terminals that will accept cables from 0.5mm to 2mm wide. The connection between the I/O module and the Combo board is via a 30cm IDC connection cable provided with the board.

The board has been designed to a 72mm standard width so that it can be mounted in DIN rail mounting modules.

4x Opto-Isolated Input / Relay Output Board Features

  • 4x Opto Insulated Inputs for each of the I/O port pins
  • 4x Form C type Relays Rated at 5A, 240V AC with 12V coil
  • LED indicator for relay and opto status
  • Screw Terminal Blocks for Opto inputs
  • Easy connection to the I/O port through a 0.1 pitch 10-way box header

Download 4x Opto-Isolated Input / Relay Output Board Manual (PDF; 107KB)


Optional Recommended Products for this Item
Power Supply 12V DC, 0.75A, 220V Euro plug, pos. inner+ US$9.00
Power Supply 3-12V DC, U.S. plug, 6 connection tips+ US$11.00
Power Supply 3-12V DC, US/UK/Euro/AU Plugs, 100-240VAC+ US$13.00

This product was added to our catalog on Monday 22 October, 2007.

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