Y301-440 and Y301-444 provide four digital inputs and four relay outputs for Modbus RTU cabinet expansion. Y301-444 adds four analog inputs, making it a practical choice when a control panel needs switch status, relay control, and process signal acquisition in one module.
Best Fit
- Multi-zone lighting, fan, valve, and pump control.
- Cabinets that need balanced 4DI + 4DO remote I/O.
- Process control panels that also need 0-10 V, 0-5 V, or 4-20 mA input.
Model Options
| Y301-440 | 4DI + 4DO, compact digital I/O node. |
| Y301-444 | 4DI + 4DO + 4AI, for digital control with analog sensing. |
Key Specifications
- Four SPDT relay outputs, rated 277 VAC / 10 A or 28 VDC / 10 A.
- Four opto-isolated dry/wet contact DI channels with pulse counting.
- Y301-444 supports four analog inputs: 0-10 V, 0-5 V, or 4-20 mA.
- Up to 8 local rules for follow, pulse, delay, schedule, logic, and AI threshold control.
- 5 to 36 VDC input, -40 to 85 C operation, watchdog and surge-protected communication.
Before Ordering
If your project only needs digital points, choose Y301-440. If analog sensors are part of the same cabinet, Y301-444 avoids an extra module.
