The NI ‑ 9472 uses industrial logic levels and signals so it can be connected directly to a wide variety of industrial switch modules, converters, and other devices. Each channel is compatible with signals from 6 V to 30 V, offers overvoltage protection against interference between the output channels and the backplane and has an LED status display.
 Product features:
-  Number of pure digital input channels: 0
-  Number of pure digital output channels: 8
-  Number of bidirectional digital channels: 0
-  Logic level of the digital I / O: 12 V 24 V.
-  Maximum update rate: 100 µs
-  Direction of current flow: output supplying current
-  Isolation of the digital I / O: 250 Veff Isolation of the channel from ground
-  Connection type front: screw connection
-  Protective coating: no
-  With housing: yes
-  Supported hardware platform: CompactDAQ, CompactRIO