WisNode Modbus Bridge


RAKwireless‘ RAK7431 wireless Modbus converts RS485 to LoRaWAN.

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RAKwireless‘ RAK7431 wireless Modbus converts RS485 to LoRaWAN®. Ideal for industrial applications, this smart device relays Modbus data via a LoRaWAN® network to transmit data to and from connected end devices. Suitable for use with all classes of LoRaWAN® (A, B and C), the RAK7431 wireless Modbus enables you to connect up to 16 RS485 compatible devices. These devices can then be monitored and controlled in real time via a LoRaWAN® gateway and server. With a range of 15+ km, the RAK7431 wireless modbus can be wall, DIN rail or magnetically mounted. Supporting a wide range of voltage supplies, the RAK7431 is ready to provide excellent signal quality in areas such as large factories, busy offices and warehouses.


  • Operates on LoRaWAN® 1.0.3 protocol stack
  • Working modes include: Polling mode, transparent mode and packet mode
  • Provides remote cloud management of RS485 devices
  • Can address up to 16 RS485 client terminal nodes
  • Wide range od input voltages, 8-48V DC input
  • Suitable for wall, DIN rail and magnetic mounting


LoRaWAN® Protocol LoRaWAN® 1.0.3
LoRa Frequencies EU868 other variants are available
LoRaWAN® Mode Class A/ Class B/ Class C
LoRa Tx Power 20dBm
LoRa Antenna Interface SMA MALE, External omnidirectional Antenna
RS485 Data Rate Configurable 9600 – 115500bps
RS485 Carrying Capacity 16 Nodes
RS485 Protection 18KV HBM protection 13KV IEC61000-4-2 contact discharge 4KV IEC61000-4-4 fast transient burst
Input Voltage 8V – 48V
Rated Power Maximum 1W
Output Voltage 8V – 48V
Dimensions 93.6mm x 100.3mm x 24mm
Working Temperature -30°C ~ 65°C
Storage Temperature -40°C ~ 85°C

Key documents & information

Discounted Trade Pricing: Contact us for trade pricing, to place an order or to discuss your IoT projects.
All of our products are available to customers throughout Europe. For more information on shipping costs, trade pricing and lead times, please contact our team. Our technical sales team are also happy to advise customers on the best LoRaWAN® Modbus devices for their specific applications on an individual project basis.
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Additional information

Dimensions 93.6 × 100.3 × 24 mm



Environmental Protection


Measurements Taken

Power Source

DC, Micro USB



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