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Y403-11-L LoRa Auto Relay Wireless I/O Module Specification
Contents
- Overview
- Ordering Information
- Key Features
- Technical Specifications
- Interfaces and Indicators
- Mechanical and Environmental
- Installation and Wiring
- Important Notes
1. Overview
Y403-11-L links equal-status LoRa nodes, each with 1 DI and 1 SPDT relay output. Nodes automatically choose a route and forward switching signals. Use it for coordinated auxiliary control, such as alarm annunciation or lighting, rather than a safety-rated emergency-stop or personnel-safety circuit.
Operating Logic
- When the
DIon any node is closed, theDOon all nodes, including the local node, energizes - During normal communication, the outputs on all nodes reset only after the
DIon every node returns to open - Auto Relay nodes select a route and forward signals to extend communication distance
Communication Loss
If wireless communication is lost, the receiver retains the last relay output states for approximately 80 seconds. If communication has not recovered by then, the relay outputs automatically reset to the de-energized (OFF) state. The normally open (NO–COM) contacts open.
2. Ordering Information
Model Configuration
Y403-11-L is an Auto Relay LoRa module with 1 DI and 1 DO per node. Nodes have equal status and automatically forward signals.
For the full code and examples, see Model Naming.
Package Contents
| Qty. | Item |
|---|---|
| 1 | Y403-11-L module |
| 1 | 470 MHz magnetic-mount antenna |
| 1 | DIN rail clip |
| 1 | Quick reference guide |
| 1 | Warranty card |
3. Key Features
- Passive dry-contact/NPN inputs and SPDT relay outputs
- Reverse-polarity protection
- Hardware watchdog
- Private LoRa communication without a SIM card or Internet gateway
4. Technical Specifications
Wireless
| Parameter | Specification |
|---|---|
| Frequency band | 398 to 525 MHz |
| Communication mode | Half-duplex |
| Communication range | Up to 5 km per hop standard; 10 km option available for selected configurations |
| Relay extension | Extended through node-to-node relaying |
| Antenna connector | SMA |
| Standard antenna | 470 MHz magnetic-mount antenna |
Electrical
| Parameter | Specification |
|---|---|
| Supply voltage | 9 to 36V DC |
| Max. power consumption | 1W |
| Input type | Passive dry contact / NPN open-collector (no voltage input to DI) |
| Output type | SPDT relay |
| Output rating | AC 277V 5A / DC 28V 5A |
| Operating temperature | -20 to +85 degC |
| Operating humidity | 10% to 90% RH, non-condensing |
5. Interfaces and Indicators
Interface Summary
| Interface | Description |
|---|---|
| Antenna | SMA connector for LoRa antenna |
| Power | DC 9 to 36V input with reverse-polarity protection |
| Input | Passive switch input (DI + COM) |
| Output | Relay output (NO + COM + NC) |
LED Indicators
| LED | Function | Status |
|---|---|---|
| Work | System status | On after power-up |
| Link | Relay link status | On when the relay communication link is established |
| Input | Input status | On when DI is closed |
| Output | Output status | On when the relay is energized |
6. Mechanical and Environmental
Mechanical Specifications
| Parameter | Specification |
|---|---|
| Dimensions | 88 x 37 x 59 mm |
| Weight | Approx. 50 g |
| Mounting | 35 mm DIN rail |
| Protection rating | IP20 |
| Housing material | Flame-retardant plastic |
7. Installation and Wiring
Use the Y403-11-L user manual for power, input, and relay wiring, pairing or replacement, and commissioning.
DI accepts dry contacts or NPN open-collector signals, not voltage inputs. Relay contacts require an external load supply. Select the load and protection against the electrical ratings above.
8. Important Notes
- Range figures assume an open-area installation. The 10 km option requires the specified configuration and antenna; obstructions, interference, and antenna placement affect the installed link.
- The half-duplex wireless link is unsuitable for guaranteed timing or as the sole emergency-stop/personnel-safety path.
- Multi-hop forwarding adds wireless delay. Assess the complete relay path against the control timing requirement.
- Manufacturer: Hunan YenGear Tech Co., Ltd.
- Address: Room 21014, Building 1, Fudi Xingguang Tiandi, Yingxin Road, Yuhua District, Changsha, Hunan, China
- Email: hi@yengear.com
- Website: www.yengear.com