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ULN2803 Switch Board

ULN2803 Switch Board  is a very useful board that allows much higher voltage and current devices to be interfaced to the low
level logic provided by the I/O24 modules


SKU: PRO-I/O ULN2803 Board-0 Category:

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The ULN2803 Switch Board is an accessory board that allows the control of much higher voltages and currents.

The board consists of a ULN 2803 and Blue LED indicator setup to indicate which channels are currently active.
ULN2803 Switch Board consists of 8-bit TTL-input NPN Darlington sink drivers. Each Darlington driver can handle a maximum of 500mA continuous (when using a single channel only)
and can withstand a maximum of 50V in its off state. This makes the ULN2803 well suited to provide an interface between the low logic level interfaces and higher current/voltage
devices such as relays, solenoids, motors and lamps.
The connections to the board are by screw terminals that will accept cables 0.5 – 2mm
The connection between the I/O24 module and the ULN2803 switchboard is via a 30 cm.
IDC connection cable provided with the board.

  • ULN2803
  • Indication Blue LED’s for channel status
  • Screw Terminal Blocks for outputs
  • Wire gauge: 22-14 AWG
  • Easy connection by 10-way box header to suit standard IDC connector for connection to the I/O port
  • 72mm Standard width for DIN Rail Modules
  • Dimensions – 2.6 X 2.8 X 1 inches (65 X 72 X 25.4mm)


1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual colour of the item because of different photographing light, angle and display monitor.

ULN2803 Switch Board

SKU: PRO-I/O ULN2803 Board-0 Category:


96 in stock

5 + 5%
10 + 7.5%

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PRO-I/O ULN2803 Board-0 ULN2803 Switch Board - Datasheet Document Download

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