Product was exactly as described. Our engineers were pleased with the performance.
π Hover to zoomReliable and cost-effective digital input module for industrial PLC systems, ensuring precise signal acquisition in harsh environments.
| Brand | Huamao Oute |
| Model | SM 821-1NH22 |
| Voltage | 24V DC |
| Country of Origin | China |
| Weight | 0.15 kg |
| Dimensions | 120x80x40 mm |
| Certifications | CE, FCC, RoHS |
| SKU / MPN | SM821-1NH22 |
| Whatβs in the box | 1x digital input module, 1x connector, 1x user manual |
| Inputs | 16 digital inputs |
| Input Type | Sink/Source (IEC 61131-2 Type 1/3) |
| Rated Voltage | 24V DC |
| Isolation | 1500V AC channel-to-backplane |
| Response Time | < 1 ms |
| Mounting | DIN Rail (35 mm) |
Key benefits: High noise immunity, easy wiring with plug-in connectors, compact modular design, wide operating temperature range (-25Β°C to +60Β°C), LED status indicators per channel.
Typical applications: Manufacturing line monitoring, conveyor belt status detection, limit switch sensing, push button panels, safety interlocks, packaging machinery.
Lifecycle: Active product, 7+ years availability
Product was exactly as described. Our engineers were pleased with the performance.
Please contact us if you need product documentation or technical information.





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