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Y402-4411-L LoRa Wireless I/O System Specification
Table of Contents
- Overview
- System Components
- Key Features
- Technical Specifications
- Interface & Pin Description
- Mechanical & Environmental
- Installation & Wiring
- Important Notes
- Ordering Information
1. Overview
The Y402-4411-L is a specialized wireless switch transmission system designed for one-to-four channel mapping applications. The system consists of one 4-channel master device (Y402-4411-L-M) and four 1-channel slave devices (Y402-4411-L-S1, S2, S3, S4). Based on LoRa modulation technology, this system enables precise channel-to-channel mapping between master inputs and individual slave outputs.
System Architecture
- Channel-to-Channel Mapping: Master Channel 1 → Slave 1, Master Channel 2 → Slave 2, etc.
- Bidirectional Communication: Master-to-slave and slave-to-master signal transmission
- Dedicated Pairing: Each master channel communicates with its corresponding slave
- No Operating Costs: No SIM cards or subscription fees required
- Pre-configured System: Factory-paired for immediate operation
Working Principle
Master to Slave Transmission: When master Channel N collects a switch signal, it transmits wirelessly to slave N, causing that specific slave's relay output to change accordingly.
Slave to Master Transmission: When slave N's input is activated, the signal transmits to master Channel N, changing the corresponding master output.
2. System Components
2.1 Master Device (Y402-4411-L-M)
- Role: Central control unit with 4 channels
- Function: Controls 4 individual slaves, receives signals from each slave
- Channels: 4 independent input/output channels
- Dimensions: 88mm × 85mm × 59mm
- Weight: Approx. 100g
- Power Consumption: 2W (maximum)
2.2 Slave Devices (Y402-4411-L-S1~S4)
- Role: Individual remote terminal units
- Function: Each slave responds to its corresponding master channel
- Channels: 1 input/output channel per slave
- Dimensions: 88mm × 37mm × 59mm each
- Weight: Approx. 50g each
- Power Consumption: 0.8W (maximum) per slave
2.3 System Configuration
- Complete System: 1 Master (4 channels) + 4 Slaves (1 channel each)
- Channel Mapping: Fixed mapping - Master Channel N ↔ Slave N
- Maximum Range: 5000 meters in open areas
- Factory Pre-paired: No configuration required
3. Key Features
- Channel-to-Channel Mapping – Precise 1-to-1 channel mapping between master and slaves
- Quad-Channel Master – 4 independent channels for complex control scenarios
- Distributed Slave Architecture – 4 individual slaves for remote location deployment
- Wireless Range – Up to 5000 meters transmission distance in open areas
- Bidirectional Communication – Master-to-slave and slave-to-master transmission
- Wide Voltage Input – 9~36V DC power supply with reverse polarity protection
- Multiple Relay Outputs – Master: 4 SPDT relays, Slaves: 1 SPDT relay each
- Universal Inputs – Supports both NPN signals and dry contact switches
- Individual Channel Status – Separate LEDs for each channel showing connection status
- Industrial Design – Hardware watchdog for high reliability, 35mm DIN rail mounting
- Obstacle Penetration – Signals can penetrate obstacles and avoid interference
- Zero Operating Costs – No SIM cards or subscription fees
4. Technical Specifications
4.1 Wireless Parameters (Common)
| Parameter | Specification |
|---|---|
| Frequency Band | 398~525MHz |
| Transmission Distance | 5000m (open area) |
| Antenna Interface | SMA connector (external thread, internal hole) |
| Standard Antenna | 470MHz magnetic mount antenna |
4.2 Electrical Parameters
| Item | Master (Y402-4411-L-M) | Slave (Y402-4411-L-S) |
|---|---|---|
| Supply Voltage | 9~36V DC | 9~36V DC |
| Max Power Consumption | 2W | 0.8W |
| Input Channels | 4 channels, NPN/dry contact | 1 channel, NPN/dry contact |
| Output Channels | 4 channels, AC 250V 5A / DC 28V 5A each | 1 channel, AC 250V 5A / DC 28V 5A |
| Operating Temperature | -20°C ~ +85°C | -20°C ~ +85°C |
| Operating Humidity | 10~90% RH (non-condensing) | 10~90% RH (non-condensing) |
4.3 Mechanical Parameters
| Item | Master (Y402-4411-L-M) | Slave (Y402-4411-L-S) |
|---|---|---|
| Dimensions | 88mm × 85mm × 59mm | 88mm × 37mm × 59mm |
| Weight | Approx. 100g | Approx. 50g |
| Mounting | Standard 35mm DIN rail or screw mounting | Standard 35mm DIN rail |
5. Interface & Pin Description
5.1 Master Device Interface (Y402-4411-L-M)
| Interface | Description |
|---|---|
| Antenna | SMA interface for LoRa magnetic or rod antenna |
| Power | DC 9~36V input with reverse polarity protection |
| Input | 4-channel passive switch input with input terminals and common terminals |
| Output | 4-channel relay output with normally open, common, and normally closed terminals |
5.2 Slave Device Interface (Y402-4411-L-S)
| Interface | Description |
|---|---|
| Antenna | SMA interface for LoRa magnetic or rod antenna |
| Power | DC 9~36V input with reverse polarity protection |
| Input | 1-channel passive switch input with input terminal and common terminal |
| Output | 1-channel relay output with normally open, common, and normally closed terminals |
5.3 LED Indicators
Master Device LEDs
| LED Name | Function | Status Description |
|---|---|---|
| Power | System working indicator | Constantly lit when system is running |
| Input N (N=1~4) | Channel N input indicator | Lit when input N and common N are shorted |
| Connection N (N=1~4) | Channel N connection indicator | Lit when master connects to slave N |
| Output N (N=1~4) | Channel N output indicator | Lit when output common N and normally open N conduct |
Slave Device LEDs
| LED Name | Function | Status Description |
|---|---|---|
| Power | System working indicator | Constantly lit when system is running |
| Link | Connection status indicator | Constantly lit when connection is established |
| Input | Input indicator | Lit when input terminal and common terminal are shorted |
| Output | Output indicator | Lit when output common and normally open conduct |
6. Mechanical & Environmental
| Item | Master (Y402-4411-L-M) | Slave (Y402-4411-L-S) |
|---|---|---|
| Dimensions | 88 × 85 × 59 mm | 88 × 37 × 59 mm |
| Mounting | 35 mm DIN rail clip or screw mounting | 35 mm DIN rail clip |
| Protection | IP20 | IP20 |
| Enclosure | Flame-retardant plastic housing | Flame-retardant plastic housing |
| Weight | 100g | 50g |
7. Installation & Wiring
7.1 Input Connection
For mechanical switches (self-locking switches, float switches, relay outputs):
- Connect directly to device input terminals without any voltage
For NPN signals:
- Connect NPN emitter to common terminal
- Connect NPN collector to input terminal
- Do not connect NPN signals to other power sources
For active signals:
- Use intermediate relays to convert active signals to passive signals
- Then connect to device input terminals
7.2 Output Connection
For direct load control (up to 1kW resistive loads per channel):
- Connect load directly in series with the device
For high-power applications (above 1kW):
- Use AC contactors for power switching
- Refer to wiring diagrams for proper connection
7.3 Installation Guidelines
- Install antennas in open areas, vertically positioned ~2 meters above ground
- Keep antennas away from large metal equipment
- Ensure antenna connectors are tightly secured
- Mount devices on 35mm DIN rails or use screw mounting in electrical cabinets
- Maintain proper clearance for ventilation and wiring
- Verify channel mapping: Master Channel 1 ↔ Slave 1, Channel 2 ↔ Slave 2, etc.
8. Important Notes
- Communication Type – This is a half-duplex communication device. Not suitable for applications requiring high real-time performance in complex environments.
- Frequency Range – Product operates at 398~525MHz. Performance may be affected outside this range.
- Channel Mapping – Fixed channel mapping (Master Channel N ↔ Slave N) cannot be reconfigured.
- Antenna Installation – Ensure tight antenna connections, place antennas in open areas, position vertically ~2 meters high, and keep away from large metal equipment.
- System Configuration – System is factory pre-paired and requires no user configuration.
- Device Safety – Follow all instructions in the manual for proper setup and operation.
9. Ordering Information
9.1 Model Naming
- Y402-4411-L-M: Master device (4 channels)
- Y402-4411-L-S: Slave device (1 channel each)
9.2 Package Options
| SKU | Description |
|---|---|
| Y402-4411-L-Complete | 1 Master + 4 Slaves (complete system) |
| Y402-4411-L-M | Master device only |
| Y402-4411-L-S | Individual slave device |
- Manufacturer: Hunan Yanji Tech Co.,Ltd
- Address: Room 21014, Unit 1, Fudixingguang plaza, Yuhua district Yingxin road, Changsha, Hunan, P.R. China
- Email: hi@yanjiiot.com
- Website: www.yanjiiot.com