Description
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
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitive pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
Run Business
Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.
Kevin H. –
The variable frequency drive was calibrated easily. Works like a charm.
James P. –
Good price for such a robust HMI. Technical documentation was clear.