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Wireless I/O Module (Y401 / Y402 / Y403 / Y412)
The YenGear Wireless I/O Module family extends digital control and analog measurement signals over a private LoRa link. Digital models connect passive field inputs to relay outputs; Y401 analog models reproduce remote analog inputs at corresponding analog outputs. The Y401, Y402, and Y403 families cover point-to-point, one-to-many, and Auto Relay 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.
Standard communication range is up to 5 km in open areas. A 10 km range option is available for selected configurations with the specified antenna and installation conditions. Y401-99-L also supports a fast communication mode up to 1 km. Actual range depends on antenna installation, obstructions, interference, and site conditions. DI terminals accept only passive dry contacts or NPN open-collector outputs; analog terminals require the signal type specified for the selected model.
For model-code rules, topology comparison, and model selection, use the Y401 / Y402 / Y403 Selection Guide. This page provides the family overview, model directory, and document entry points.
Model Directory
Digital I/O Models
| 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 |
 | Y401-99-L | 9 | 9 | Point-to-point (A ↔ B) | 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 |
 | Y402-41-L | 4 master / 1 slave | 4 master / 1 slave | One-to-many, 4-to-1 mapping | Manual · Specification |
 | Y403-11-L | 1 per node | 1 per node | Auto Relay | Manual · Specification |
 | Y412-22/44/88-L | 2 / 4 / 8 | 2 / 4 / 8 | Configurable master/slave; unidirectional or bidirectional | Manual · Specification |
Analog I/O Models
Both analog models use a point-to-point link and have no DI or DO channels. Channel counts below are per module.
| Product image | Model | AI | AO | Signal type | Supply | Documents |
|---|---|---|---|---|---|---|
 | Y401-0011-L | 2 | 2 | 4-20 mA | 9-36 V DC | Specification and wiring diagrams |
 | Y401-0044-L | 4 | 4 | 4-20 mA or 0-10 V | 9-36 V DC (4-20 mA); 12-36 V DC (0-10 V) | Specification and wiring diagrams |
Both analog models have no digital I/O on either side: Y401-0011-L has 2 AI and 2 AO per device, and Y401-0044-L has 4 AI and 4 AO per device. Select the required analog signal option when ordering and use the supplied model configuration for wiring.
Each specification includes two-, three-, and four-wire current connection examples. The Y401-0044-L specification also describes 0-10 V wiring; the two-wire current-loop example applies only to 4-20 mA.
Y412 — Configurable Wireless I/O Module
Y412 is the configurable multi-channel member of the Wireless I/O Module 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 5 A at 250 VAC or 30 VDC |
| Range planning | Up to 5 km standard; 10 km option available for selected configurations* |
See the Y412 Datasheet and Y412 User Manual for wiring, DIP settings, and commissioning.
Related Field-Ready Products
For a complete enclosure, power system, and field interface built around the 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.
Document Map
Use the Y401 / Y402 / Y403 Selection Guide for model naming, topology comparison, and selection. Use the Y401 / Y402 / Y403 User Manual for shared digital wiring, pairing, antenna installation, and commissioning. Use each model specification for exact I/O, power, range, relay, analog-signal, and environmental limits.
For Y412 wiring and commissioning, see the Y412 User Manual.
For analog model wiring and current product details, use the dedicated Y401-0011-L and Y401-0044-L specifications.
- Manufacturer: Hunan YenGear Tech Co., Ltd.
- Email: [email protected]
- Website: www.yengear.com