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Digital I/O
Digital I/O  
Digital I/O cards and modules let you sense and control binary (on/off, high/low) signals. Most models are commonly used to control devices and sense switch closures, while others provide high-speed pattern generation, timing and event counting. Models with current sink capacity of 8mA or more can be used to directly switch solid-state relays, while other models have built-in relays for direct connection to field voltages.  
  141 of 141 products meet your criteria. Show more options
Bus
I/O Lines
Input Lines
Output Lines
Relays
Isolation
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 141 of 141 products meet your criteria. Show more options

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    Description  BusI/O LinesInputsOutputsCurrent SinkCountersShipping  Price   
ISA-Bus Digital I/O Board with 24 Channels, 1 C/T and 37-pin Connector CYDIO 24C
ISA Digital I/O Board - 24 Channels, with Counter/Timer, 37-Pin Connector
ISA (8-bit, XT)
2424242.5mA3Call  $250.00 Add to Cart
24-Channel Digital Output Board CYDO 24HV
ISA Digital Output Board - 24 Digital Outputs, High Voltage
ISA (8-bit, XT)
24 - 24500mA - 1-2 weeks  $225.00 Add to Cart
24-Channel PCI Express Digital I/O Board CYDIO 24E
PCI Express Digital I/O Board - 24 Channels, High Current, DB-37M Connector
PCI Express x1
2424242.5mA - Call  $275.00 Add to Cart
PCI-bus, 24 Channel Digital I/O Card PCIDIO 24H
PCI Digital I/O Board - 24 Channels, 24mA/Channel Sink
PCI (32-bit, 5V
keyed)
24242424mA2Same Day  $120.00 Add to Cart
USB Digital I/O Module (UMDIO 24LH shown) UMDIO 24L
USB Digital I/O Module - 24 Channels of DIO
USB
2424242.5mA1Call  $145.00 Add to Cart
24-Channel Solid-State Relay Mounting Panel with USB Connector UCSSR 24
24-Channel Solid-State Relay Mounting Panel, with USB Connector
USB 2.0
242424 - - 2+ weeks  $425.00 Add to Cart
USB Electromechanical Relay Module with 24 SPDT (Form C) Relays and 72 Screw Terminals UCERB 24
USB Electromechanical Relay Module - 24 SPDT (Form C) Relays, with 72 Screw Terminals
USB 2.0
24 - 24 - - 1-2 weeks  $375.00 Add to Cart
24-Channel USB Digital I/O Module UMDIO 24LH
USB Digital I/O Module - 24 Channels of 64mA DIO
USB
24242464mA1Same Day  $185.00 Add to Cart
24-Channel PCI Digital I/O Board with Standard and Low-Profile Backplates HDIO 24L This item is on sale
PCI Digital I/O Board - 24 Channels, Standard PCI or Low-Profile PCI
PCI (32-bit,
universal 3.3V & 5V
keyed)
242424-24mA - Same Day  $175.00
 $125.00
Add to Cart
ISA Digital I/O Board - 10 Channels of C/T, 24 Channels of Digital I/O ATCTM 10
ISA Digital I/O Board - 10 C/Ts, 24 Digital I/Os
ISA (16-bit, AT)
2416824mA10Same Day  $195.00 Add to Cart
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 Category Browse - Digital I/O Interfaces
Counter/Timer Products