Y401-44-L LoRa Wireless I/O Module Datasheet

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Y401-44-L

Contents

1. Overview
2. Ordering Information
3. Key Features
4. Technical Specifications
5. Interfaces and Indicators
6. Mechanical and Environmental
7. Installation and Wiring
8. Important Notes

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1. Overview

The Y401-44-L is a four-channel point-to-point wireless I/O terminal based on LoRa modulation. Two units (Device A and Device B) are factory paired. All four channels operate independently and are ready to use without additional setup.

Operating Logic

• Device A DI closed -> the corresponding DO on Device B energizes
• Device A DI open -> the corresponding DO on Device B resets
• Bidirectional operation: the same logic applies from Device B to Device A

Channel Mapping

Device A	Device B
Channel 1 input	Channel 1 output
Channel 2 input	Channel 2 output
Channel 3 input	Channel 3 output
Channel 4 input	Channel 4 output

Typical Applications

Multi-channel remote control, pump interlock, industrial equipment control, and alarm systems

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2. Ordering Information

Model Naming

Y401-44-L
  |   |  `-- L: LoRa wireless communication
  |   `----- 44: 4DI/4DO configuration
  `--------- Y401: point-to-point wireless I/O module series

Package Contents

Qty.	Item
2	Y401-44-L modules (Device A and Device B)
2	470 MHz magnetic-mount antennas
2	DIN rail clips
1	Quick reference guide
1	Warranty card

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3. Key Features

1. Four-channel control - Four independent channels with no cross-interference
2. Long-range communication - Up to 5000 m in open area
3. Plug-and-play deployment - Factory paired, no configuration required
4. Wide supply range - 9 to 36V DC with reverse-polarity protection
5. Relay output - 4 x SPDT relays, rated at AC 277V 5A / DC 28V 5A
6. Universal DI - Supports dry contact and NPN inputs
7. Status indication - LEDs for power, link, input, and output status
8. Industrial design - Hardware watchdog and 35 mm DIN rail mounting
9. No operating fee - No SIM card and no subscription required

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4. Technical Specifications

Wireless

Parameter	Specification
Frequency band	398 to 525 MHz
Communication range	5000 m (open area)
Antenna connector	SMA
Standard antenna	470 MHz magnetic-mount antenna

Electrical

Parameter	Specification
Supply voltage	9 to 36V DC
Max. power consumption	2W
Input channels	4 x NPN signal / dry contact
Output channels	4 x SPDT relay
Output rating	AC 277V 5A / DC 28V 5A
Operating temperature	-20 to +85 degC
Operating humidity	10% to 90% RH, non-condensing

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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	4 x passive switch input (DI + COM)
Output	4 x relay output (NO + COM + NC)

LED Indicators

LED	Function	Status
Power	System status	On after power-up
Link	Link status	On when the wireless link is established
Input 1 to 4	Input status	On when the corresponding DI is closed
Output 1 to 4	Output status	On when the corresponding relay is energized

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6. Mechanical and Environmental

Mechanical Specifications

Parameter	Specification
Dimensions	88 x 72 x 59 mm
Weight	Approx. 50 g
Mounting	35 mm DIN rail
Protection rating	IP20
Housing material	Flame-retardant plastic

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7. Installation and Wiring

Input Wiring

Mechanical switches (maintained switch, float switch, relay contact):

• Connect directly between DI and COM
• No external power supply is required

NPN signal:

• Emitter -> COM
• Collector -> DI
• Do not connect an external voltage source to the input terminal

Output Wiring

Direct load (<= 1 kW resistive load):

• Wire the load in series with the relay output

High-power load (> 1 kW):

• Use an AC contactor or external power relay

Installation Notes

1. Install the antenna vertically in an open area, about 2 m above ground.
2. Keep the unit away from large metal structures.
3. Tighten the antenna connector securely.
4. Mount the unit inside the control cabinet on a 35 mm DIN rail.
5. Leave enough space for ventilation.

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8. Important Notes

1. Communication mode - Half-duplex communication, not intended for hard real-time control.
2. Frequency range - Recommended operating range is 398 to 525 MHz. Performance may degrade outside this range.
3. Antenna placement - Install the antenna vertically in an open area and keep it away from metal obstructions.
4. Channel isolation - The four channels operate independently without mutual interference.

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• 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