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Y401-44-L LoRa Wireless I/O Module Specification
Table of Contents
- Overview
- Ordering Information
- Key Features
- Technical Specifications
- Interface & Pin Description
- Mechanical & Environmental
- Installation & Wiring
- Operating Modes
- Important Notes
1. Overview
The Y401-44-L is a 4-channel wireless switch transmission terminal based on LoRa modulation technology, designed for remote transmission of digital signals. Device A collects input switch status and transmits it wirelessly to paired Device B, which controls the corresponding relay outputs. Bidirectional communication enables signal transmission from B to A as well.
Product Configuration
- Quad-channel control: 4 independent channels with no interference between channels
- Pair-based operation: Each set includes Device A and Device B for mutual control
- Pre-configured: Factory-paired devices, no user configuration required
- Plug-and-play: Simply connect power and start using
- High Reliability: Built-in independent hardware watchdog for guaranteed operation
Working Principle
When Device A's input terminal is shorted with the common terminal, the signal is transmitted to Device B, causing Device B's output common terminal and normally open terminal to conduct. When Device A's input and common terminals are disconnected, Device B's output common terminal and normally closed terminal conduct. The same operation works in reverse from Device B to Device A.
Channel Mapping
- Device A Channel 1 input ↔ Device B Channel 1 output
- Device A Channel 2 input ↔ Device B Channel 2 output
- Device A Channel 3 input ↔ Device B Channel 3 output
- Device A Channel 4 input ↔ Device B Channel 4 output
- Bidirectional: Device B inputs also control Device A outputs correspondingly
2. Ordering Information
2.1 Model Naming
Y401-44-L
- Y401: LoRa wireless I/O module series
- 44: 4DI/4DO configuration
- L: Standard version
2.2 Package Contents
- 2 × Y401-44-L modules (Device A & Device B)
- 2 × 470MHz magnetic mount antennas
- 2 × DIN rail clips
- Quick reference guide
- Warranty card
3. Key Features
- Quad-Channel Control – 4 independent channels with simultaneous operation
- Wireless Range – Up to 5000 meters transmission distance in open areas
- Bidirectional Transmission – Mutual transmission and reception between devices
- Wide Voltage Input – 9~36V DC power supply with reverse polarity protection
- Quad Relay Outputs – 4 SPDT relays supporting AC 250V/5A or DC 28V/5A each
- Universal Inputs – Supports both NPN signals and dry contact switches
- Status Indicators – Multiple LEDs showing working status, connection, and individual channel status
- Industrial Design – Hardware watchdog for high reliability, 35mm DIN rail mounting
- Plug-in Terminals – 5.08mm pitch plug-in terminals for easy wiring
- Zero Maintenance – No programming, no wiring, no operating costs
4. Technical Specifications
4.1 Wireless Parameters
| Parameter | Specification |
|---|---|
| Frequency Band | 398~525MHz |
| Transmission Distance | 5000m (open area, line of sight) |
| Antenna Interface | SMA connector (external thread, internal hole) |
| Standard Antenna | 470MHz magnetic mount antenna |
4.2 Electrical Parameters
| Parameter | Specification |
|---|---|
| Supply Voltage | 9~36V DC |
| Max Power Consumption | 2.5W |
| Input Channels | 4 channels, NPN input and dry contact switch |
| Output Channels | 4 channels, AC 250V 5A / DC 28V 5A each |
| Terminal Type | 5.08mm pitch plug-in terminals |
| Operating Temperature | -20°C ~ +85°C |
| Operating Humidity | 10~90% RH (non-condensing) |
4.3 Mechanical Parameters
| Parameter | Specification |
|---|---|
| Dimensions | 88mm × 85mm × 59mm |
| Weight | Approx. 100g |
| Mounting | Standard 35mm DIN rail or screw mounting |
5. Interface & Pin Description
5.1 Interface Overview
| 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 LED Indicators
| LED Name | Function | Status Description |
|---|---|---|
| Power | System working indicator | Constantly lit when system is running |
| Link | Connection status indicator | Constantly lit when paired devices establish connection |
| Input N (N=1~4) | Channel N input indicator | Lit when input N and common N are shorted |
| Output N (N=1~4) | Channel N output indicator | Lit when output common N and normally open N conduct |
6. Mechanical & Environmental
| Item | Specification |
|---|---|
| Dimensions | 88 × 85 × 59 mm |
| Mounting | 35 mm DIN rail clip or screw mounting (M3×10 self-tapping screws recommended) |
| Protection | IP20 |
| Enclosure | Flame-retardant plastic housing |
| Weight | 100g |
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
- Use 5.08mm pitch plug-in terminals for secure connections
8. Operating Modes
8.1 Device Pairing
The system consists of paired Device A and Device B (both devices have identical functionality):
- A to B Transmission: User switch signals enter Device A inputs, Device A detects signals and transmits wirelessly to Device B
- B to A Transmission: Device B switch signals can also transmit to Device A for relay output conversion
- Independent Channels: Each of the 4 channels operates independently without interference
8.2 Channel Operation
- Channel 1: Device A Input 1 ↔ Device B Output 1
- Channel 2: Device A Input 2 ↔ Device B Output 2
- Channel 3: Device A Input 3 ↔ Device B Output 3
- Channel 4: Device A Input 4 ↔ Device B Output 4
- Bidirectional: Both devices can transmit and receive on each channel
9. 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.
- Antenna Installation – Ensure tight antenna connections, place antennas in open areas, position vertically ~2 meters high, and keep away from large metal equipment.
- Power Supply – Use proper voltage range (9~36V DC). Low voltage may prevent startup; high voltage may damage the device.
- Device Safety – Follow all instructions in the manual for proper setup and operation.
- 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