RAKWireless RAK7431 Wireless Modbus

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.

RAK7431 Wireless Modbus

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
4KV IEC61000-4-4 fast transient
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

  • RAKWireless RK7431 Wireless Modbus Datasheet
  • RAKwireless RAK7431 Wireless Modbus Quick Start guide

  • Ordering information

    Partcode: RAK7431
    RRP: £74.32 + VAT

    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.