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Wireless I/O Modules (Y401 / Y402 / Y403 / Y412)
YenGear Wireless I/O Modules replace long control cables with a private LoRa link between passive field inputs and SPDT relay outputs. The Y401, Y402, and Y403 families cover point-to-point, one-to-many, and multi-node linkage relationships; Y412 adds configurable 2-, 4-, and 8-channel master/slave control. No SIM card, Internet connection, or LoRaWAN gateway is required for the basic link.
The specified range is up to 10 km in open areas, subject to model, antenna installation, obstructions, interference, and site conditions. Confirm the selected model specification before installation. DI terminals accept only passive dry contacts or NPN open-collector outputs; never apply voltage directly to DI.
Model Matrix
| Product image | Model | DI | DO | Control relationship | Documents |
|---|---|---|---|---|---|
 | Y401-11-L | 1 | 1 | Point-to-point (A ↔ B) | Manual · Specification |
 | Y401-22-L | 2 | 2 | Point-to-point (A ↔ B) | Manual · Specification |
 | Y401-44-L | 4 | 4 | Point-to-point (A ↔ B) | Manual · Specification |
 | Y402-11-L | 1 | 1 | One-to-many (master ↔ slaves) | Manual · Specification |
 | Y402-44-L | 4 | 4 | One-to-many (master ↔ slaves) | Manual · Specification |
 | Y402-4411-L | 1 master / 4 slave | 1 master / 4 slave | One-to-many, 1-to-4 mapping | Manual · Specification |
 | Y403-11-L | 1 per node | 1 per node | Multi-node linkage | Manual · Specification |
 | Y412-22/44/88-L | 2 / 4 / 8 | 2 / 4 / 8 | Configurable master/slave; unidirectional or bidirectional | Manual · Specification |
Y412 — Configurable Wireless I/O
Y412 is the configurable multi-channel member of the Wireless I/O Modules family. Choose 2DI + 2DO, 4DI + 4DO, or 8DI + 8DO hardware, then set the master/slave role and control mode for the site. Bidirectional follow and unidirectional feedback modes support remote start/stop, valve and pump control, lighting groups, and other auxiliary relay applications.
| Selection point | Y412 options |
|---|---|
| Channel count | 2, 4, or 8 DI + DO per module |
| Control mode | Master/slave; unidirectional feedback or bidirectional follow |
| Output action | Momentary or latching |
| Power versions | 8–28 VDC or 85–265 VAC |
| Relay output | Form A, up to 7 A at 250 VAC or 30 VDC |
| Range planning | Up to 10 km in open areas with the specified antenna and installation conditions* |
See the Y412 Datasheet and Y412 User Manual for wiring, DIP settings, and commissioning.
Series Comparison
The table below compares the fixed Y401/Y402/Y403 topology families. Y412 is covered in the configurable Wireless I/O section above because its channel count and operating mode are selected independently.
| Selection criterion | Y401 | Y402 | Y403 |
|---|---|---|---|
| Control relationship | Point-to-point, bidirectional | One master to one or more slaves; status can return | Any linked node can drive all linked relay outputs |
| Channel options | 1, 2, or 4 DI/DO per node | 1/1, 4/4, or 1-to-4 mapping | 1 DI + 1 DO per node |
| Range | Up to 10 km* | Up to 10 km* | Up to 10 km* per hop; relay paths can extend coverage |
| Best fit | Two fixed locations and cable replacement | A control point with several remote points | Multi-point linkage across a distributed site |
| Setup | Factory-paired point-to-point set | Factory-paired master/slave set; expandable | Nodes automatically forward signals |
* Open-area figure; actual range depends on model, antenna, installation height, obstructions, interference, and site conditions.
Core Application Patterns
| Application | Typical relationship | Suitable families | What the link does |
|---|---|---|---|
| Access-control signal extension | Door, gate, or barrier contact at one location to a remote relay | Y401, Y402, or Y412 | Carries a dry-contact state to a remote relay or controller input without a long signal cable. |
| Multi-point linkage alarm | Any alarm input to multiple remote alarm outputs | Y403 | Forwards a contact state to linked nodes for coordinated auxiliary annunciation. Use a certified independent path for life-safety functions. |
| Remote wireless equipment control | Local switch or PLC contact to a distant load circuit | Y401, Y402, Y403, or Y412 | Drives a suitably rated relay, contactor, lamp, valve, or pump control circuit; the module relay does not supply load voltage. |
These modules are for auxiliary control and signalling. Do not use the wireless link as the sole emergency-stop, personnel-safety, or hard-real-time control path. High-power or inductive loads require a correctly rated contactor and suppression.
Related Field-Ready Products
For a complete enclosure, power system, and field interface built around the Y40 wireless link, see the Y901 Integrated Multi-Point Wireless Alarm System and Y953 Wireless Control Cabinet. These are complete products, not additional Wireless I/O Module SKUs.
Choose a Model
- Select the control relationship: two points (Y401), one-to-many (Y402), or multi-node linkage (Y403); choose Y412 when configurable master/slave modes are a better fit.
- Select the DI/DO count and, for Y402-4411-L, the 1-to-4 mapping. For Y412, choose the 2-, 4-, or 8-channel variant and the required operating mode.
- Confirm range, antenna placement, power, relay rating, wiring, and safety requirements in the model specification.
Use the Y4xx Selection Guide for a scan-friendly comparison, the Y401 / Y402 / Y403 User Manual and Y412 User Manual for wiring and commissioning, and the Application Guide for deployment patterns.
- Manufacturer: Hunan YenGear Tech Co., Ltd.
- Email: [email protected]
- Website: www.yengear.com