Four digital inputs and four SPDT relay outputs on the master and on each slave
Y402-44-L One-to-Many LoRa Wireless I/O, 4DI/4DO
4DI+4DO LoRa One-to-Many Wireless I/O Module
Y402-44-L distributes four independent digital channels from one LoRa master to multiple 4DI/4DO slave units, with return signaling to the matching master outputs.

Key Features
Each master input drives the matching output on all slaves; a slave input drives the same-numbered master output
A master output resets after that input channel is open on every slave
Factory-paired master/slave base set supports additional slave units for one-to-many control
Up to 5 km standard in open areas; a 10 km option is available for selected configurations with suitable antenna installation
Dry-contact/NPN inputs accept no applied voltage; the modules use 9–36 VDC power and 35 mm DIN-rail mounting
Specifications
Wireless
- Frequency Band
- 398~525 MHz
- Communication Range
- Up to 5 km standard; 10 km option for selected configurations (open area; antenna and site dependent)
- Antenna Connector
- SMA
- Standard Antenna
- 470 MHz magnetic-mount antenna
Power Supply
- Voltage
- DC 9~36V
- Max Power Consumption
- 2W (master) / 1.5W (slave)
- Operating Temperature
- -20°C ~ +85°C
- Humidity
- 10% ~ 90% RH, non-condensing
Digital Inputs
- Channels
- 4
- Type
- Passive dry contact / NPN open-collector (no voltage input to DI)
Digital Outputs
- Channels
- 4
- Type
- SPDT relay
- Rating
- AC 277V 5A / DC 28V 5A
Mechanical
- Master Dimensions
- 88 x 72 x 59 mm
- Slave Dimensions
- 88 x 72 x 59 mm
- Mounting
- 35 mm DIN rail
- Protection
- IP20
Product Documents
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