Guangzhou Kefu Instrument Co., Ltd
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Digital I/O
NI offers a complete range of digital I/O products with various timing, voltage, and isolation options
Product details

NI digital I/O card

NI offers a complete range of digital I/O products with various timing, voltage, and isolation options. NI digital I/O devices can meet the needs of testing, control, and design applications, whether it is generating patterns and describing features of custom circuits, switching control lines to achieve automation in factory workshops, or developing prototypes for digital design.


NI USB-6509 high-density industrial digital I/O for USB (96 channel, 24 mA)


  • Bus powered, portable USB digital I/O device

  • 96 bidirectional I/O channels (compatible with 5V TTL/CMOS)

  • High current drive (24 mA drain or source current)

  • Optional power supply for additional power supply current

  • Built in optional pull-up/pull-down resistors

  • The industrial function set includes change detection, power on state, filter, watchdog timer



NI PCI-6521150 V mechanical relay output, 30 V digital input


  • 2A switching current, 60W switching power

  • 8. 24V logic drain or source input

  • 8 non latch mechanical relay outputs, 150 VAC/VDC

  • Programmable filters and power on status, watchdog timer, change detection

  • NI measurement services with configuration capabilities make setup simpler

  • Channel isolation: 60 V continuous, 620 Vrms 5-second withstand voltage



PXI-6528 (48 channels, 60 V) industrial digital I/O-24 inputs, 24 outputs, isolated between channels


  • Industrial function settings: programmable power on status, watchdog timer, change detection, programmable input filter

  • 24 channel inter channel optical isolation drain/source input (± 60 VDC)

  • High voltage input to PXI trigger bus

  • 150 mA current drive

  • 24 channel inter channel optical isolation drain/source output (± 60 VDC, 0-30 Vrms)

  • The highest production efficiency and performance of NI DAQmx software technology (NI DAQmx 7.1 or above)



NI PXI-6521150 V mechanical relay output, 30 V digital input


  • 24V logic level, source or drain input

  • 8 non latch mechanical relay outputs, 150 VAC/VDC

  • Channel isolation, 60 V continuous isolation, 5-second 620 Vrms tolerant isolation

  • NI measurement service software and configuration tools simplify the process of building measurement systems

  • Programmable upper limit state and input filter, watchdog timer, change detection

  • 2 A switch current, 60 W switch power supply



NI 937524 V 16 channel digital input 16 channel digital output module


  • 16 channels, 7 μ s drain digital input

  • 16 channel 500 μ s source digital output

  • Compatible with 12V and 24V input levels

  • 6V to 30V output range (depending on power supply voltage)

  • Hot plug operation

  • Working temperature range:- 40 ° C to 70 ° C


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