One 4DI/4DO master supports up to four 1DI/1DO slaves, with each slave assigned to one independent master channel
Y402-41-L LoRa Wireless I/O System
4DI/4DO Master with 1DI/1DO Slaves
Y402-41-L links a 4DI/4DO master to up to four 1DI/1DO slaves over LoRa, with independent channel mapping for digital signals and remote relay switching.

Key Features
Bidirectional LoRa channel mapping for digital signal transmission and remote relay switching
398–525 MHz radio with SMA antenna connectors and 470 MHz magnetic-mount antennas
Up to 5 km in open areas, subject to antenna placement and site conditions
Passive dry-contact or NPN open-collector inputs; do not connect an external voltage to DI
SPDT relay contacts rated at 5 A at 277 VAC or 28 VDC, with 9–36 VDC power and DIN-rail mounting
Specifications
Wireless
- Frequency Band
- 398~525 MHz
- Communication Range
- Up to 5 km (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
- 1.5W (master) / 0.8W (slave)
- Operating Temperature
- -20°C ~ +85°C
- Humidity
- 10% ~ 90% RH, non-condensing
Digital Inputs
- Master
- 4 x passive dry contact / NPN inputs
- Slave
- 1 x passive dry contact / NPN input
- Type
- Passive dry contact / NPN open-collector (no voltage input to DI)
Digital Outputs
- Master
- 4 x SPDT relays
- Slave
- 1 x SPDT relay
- Type
- SPDT relay
- Rating
- AC 277V 5A / DC 28V 5A
Mechanical
- Mounting
- 35 mm DIN rail
- Protection
- IP20
Product Documents
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