RS-485 IoT Gateway
RS-485 IoT Gateway
RS-485 IoT Gateway
RS-485 IoT Gateway

RS485/Modbus to LoRaWAN Converter

The HashStudioz RS485-LoRaWAN is a RS485 to LoRaWAN converter. It converts RS485 devices into LoRaWAN wireless networks. This simplifies the IoT installation and reduces the installation and maintenance costs.

RS485-LoRaWAN offers long distance monitoring/control of RS485 devices. Besides providing ultra-long range spread spectrum communication, it offers high interference immunity while consuming minimal power. Professional wireless sensor network applications include irrigation systems, smart meters, smart cities, building automation, etc.

  1. For data uplink:
    • RS485-LoRaWAN can send user-defined commands to RS485 devices and receive their responses. To upload the final payload to the LoRaWAN server, RS485-LoRaWAN processes these returns according to the user-defined rule.
  2. For data downlink:
    • When the LoRaWAN server sends downlink commands, RS485-LoRaWAN forwards commands from the LoRaWAN server to RS485 devices.


  1. Remote configuration via LoRa downlink: Configure the RS485 to LoRa Converter remotely using LoRa Downlink messages, allowing you to modify communication parameters without physical access.
  2. Flexible rule-based support for multiple RS485 devices: Utilize flexible rules to support and manage multiple RS485 devices seamlessly, enabling efficient communication and control within your network.
  3. Modbus protocol device support: Compatible with devices utilizing the Modbus communication protocol, enhancing the interoperability and integration capabilities of the RS485 to LoRa Converter.
  4. Periodic uplink or polling: Choose between periodic uplink transmission or polling mechanisms for efficient data transmission from RS485 devices to the LoRa network, ensuring timely and accurate data delivery.
  5. Downlink RS485 command sending: Send specific RS485 commands via LoRa downlink, enab-ling two-way communication and control by triggering actions on RS485 devices remotely.
  6. Bi-directional communication: Allows bi-directional data transmission between RS485-based devices and LoRa networks.
  7. Long-range communication: Utilizes LoRa technology to achieve long-range communication, making it ideal for applications spread across large areas.

Technical Specifications

  1. Hardware System:

    Power Consumption (exclude RS485 device):

    • Idle: 100mA@9v
    • 20dB Transmit: 210mA@9v
  2. Interface for Model:
    • RS485
    • Power Input 7~ 30V DC.
  3. LoRa Spec:
    • Frequency Range:
      • Band 1 (HF): 862 ~ 1020 Mhz
      • Band 2 (LF): 410 ~ 528 Mhz
    • 168 dB maximum link.
    • +20 dBm - 100 mW constant RF output.
    • Programmable bit rate up to 300 kbps.
    • High sensitivity: down to -148 dBm..
    • Excellent blocking immunity.
    • Low RX current of 10.3 mA, 200 nA register retention.
    • Fully integrated synthesizer with a resolution of 61 Hz.
    • FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
    • Built-in bit synchronizer for clock recovery.
    • Preamble detection.
    • 127 dB Dynamic Range RSSI.


  1. Smart Buildings & Home Automation: Enhancing efficiency and comfort in homes and buildings using automated systems for lighting, temperature, security, and more.
  2. Logistics and Supply Chain Management: Optimizing the movement and tracking of goods from origin to destination for better efficiency and inventory management.
  3. Smart Metering: Real-time monitoring of energy, water, or gas consumption for accurate billing and efficient resource management.
  4. Smart Agriculture: Implementing technology like IoT, sensors, and drones to optimize farming practices, improve crop yields, and monitor soil health.
  5. Smart Cities: Using technology and data to improve urban living through intelligent transportation, waste management, energy solutions, and public services.
  6. Smart Factory: Incorporating IoT, AI, and automation to enhance manufacturing processes, increase productivity, and enable real-time monitoring and control.


Q1: What is the RS485-LoRaWAN and what does it do?
  • A1: The RS485-LoRaWAN is a converter that transforms the RS485 communication protocol into a LoRaWAN wireless network, enabling long-distance communication for RS485 devices. It simplifies IoT installations and reduces associated costs.
Q2: What applications is RS485-LoRaWAN suitable for?
  • A2: RS485-LoRaWAN is suitable for various professional wireless sensor network applications including irrigation systems, smart meters, smart cities, building automation, and more.
Q3: How does RS485-LoRaWAN handle data transmission?
  • A4: For data uplink, RS485-LoRaWAN can send user-defined commands to RS485 devices and receive their responses. It processes these returns according to user-defined rules before uploading the final payload to the LoRaWAN server. For data downlink, it operates in LoRaWAN Class C, forwarding commands from the LoRaWAN server to RS485 devices.
Q4: Can RS485-LoRaWAN be remotely configured and upgraded?
  • A4: Yes, RS485-LoRaWAN supports remote configuration via LoRa downlink messages and firmware upgrades through the program port, allowing for easy updates and adjustments without requiring physical access.
Q5: Is RS485-LoRaWAN compatible with Modbus protocol devices?
  • A5: Yes, RS485-LoRaWAN is compatible with devices using the Modbus communication protocol, enhancing interoperability and integration capabilities.
Q6: In which applications can RS485-LoRaWAN be used?
  • A6: RS485-LoRaWAN can be used in various applications such as smart buildings and home automation, logistics and supply chain management, smart metering, smart agriculture, smart cities, and smart factories.
Q7: What is the communication range of RS485-LoRaWAN?
  • A7: The communication range of RS485-LoRaWAN is up to 1.2 kilometers, though this may vary based on environmental factors and the height of the installed antennas.
Q8: Is RS485-LoRaWAN power-efficient?
  • A8: Yes, RS485-LoRaWAN is designed for efficient power usage to ensure long life in remote and off-grid installations.


Q1: What is the purpose of a 4G-LTE RS-485 Modbus Gateway with 10 Digital Inputs?
  • A1: The 4G-LTE RS-485 Modbus Gateway with 10 Digital Inputs is designed to enable communication between remote devices using Modbus protocol over a 4G-LTE network. It also allows monitoring of up to 10 digital input signals with a minimum read time of 0.5 seconds.
Q2: Is it possible to expand the number of digital inputs?
  • A2: No, the 4G-LTE Modbus Gateway is designed with a fixed number of 10 digital inputs. If you require more inputs, you may consider using additional gateways or using external devices to aggregate and communicate the signals
Q3. What are the main features of the 4G-LTE RS-485 Modbus Gateway?
  • A3: The main features of this gateway include:
    • 4G-LTE connectivity for remote communication
    • RS-485 interface for connecting Modbus devices
    • 10 digital input channels for monitoring signals
    • Support for Modbus RTU and Modbus ASCII protocols
    • Built-in SIM card slot for mobile network connectivity
    • Secure and reliable communication with encryption and authentication
Q4: Is the gateway compatible with all Modbus devices?
  • A4: The gateway supports both Modbus RTU and Modbus ASCII protocols, making it compatible with a wide range of Modbus devices. However, it is recommended to consult the gateway's documentation or contact the manufacturer for specific compatibility details.
Q5: How can digital inputs be utilized?
  • A5: The 4G-LTE Modbus Gateway has 10 digital input channels that can monitor the status of various devices or signals. For example, they can monitor the status of sensors, switches, alarms, or any other digital signal. The input channels can be configured to trigger specific events or actions based on the detected signal changes.
Q6: Can the gateway be accessed remotely for configuration and monitoring?
  • A6: Yes, the 4G-LTE Modbus Gateway can be remotely accessed through the mobile network connection. It provides various methods for remote configuration, monitoring, and data retrievals, such as web-based interfaces, APIs, or specific software provided by the manufacturer.
Q7: What is the power supply requirement for the 4G-LTE Modbus Gateway?
  • A7: Typically, the gateway operates on a 12V DC power supply, but it's always recommended to refer to the product's specifications or user manual for accurate power supply requirements.
Q8: Does the gateway offer any security features?
  • A8: Yes, the 4G-LTE Modbus Gateway has built-in security features to protect communication and data integrity. These include encryption, authentication, and secure protocols to ensure a secure connection between the gateway and the connected devices.