The NI ‑ 9421 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 24 V signals and has an LED status display. The NI ‑ 9421 provides isolation between the input channels and ground.
Product features:
- Number of pure digital input channels: 8
- Number of pure digital output channels: 0
- Number of bidirectional digital channels: 0
- Logic level of the digital I / O: 24 V 12 V.
- Maximum update rate: 100 µs
- Current flow direction: Current sinking input
- Isolation of the digital I / O: 250 Veff Isolation of the channel from ground
- Connection type front: spring terminal
- Protective coating: no
- With housing: yes
- Supported hardware platform: CompactDAQ, CompactRIO