NI 9421 24V Digital Input Module for Sensor Monitoring
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NI NI 9421
Rugged 8-channel 24V sourcing digital input C Series module for reliable industrial signal acquisition in NI CompactDAQ and CompactRIO systems
| Brand | NI |
| Model | NI 9421 |
| Voltage | 24V DC |
| Country of Origin | Hungary |
| Weight | 150 g |
| Dimensions | 90 x 70 x 23 mm |
| Warranty | 6 months |
| Certifications | CE, UL, RoHS |
| SKU / MPN | 781238-01 |
| What’s in the box | NI 9421 module, 20-pin DSUB front connector, user documentation |
| Number of Channels | 8 Digital Inputs |
| Logic Level | 24V DC |
| Input Type | Sourcing, compatible with 3-wire sensors |
| Operating Temperature | -40°C to 70°C |
| Compatibility | NI CompactDAQ and CompactRIO chassis |
| Update Time | 7 μs |
Key benefits: Hot-swappable C Series design, supports 3-wire sensors, wide -40°C to 70°C operating range, fast 7 μs update time, seamless NI chassis integration
Typical applications: Machine condition monitoring, switch and valve status detection, industrial sensor reading, test stand automation, production line diagnostics
Lifecycle: Used condition – mature C Series product, widely available on secondary market with long-term NI platform support
1 review for NI 9421 24V Digital Input Module for Sensor Monitoring
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