RS485-LN RS485/Modbus to LoRaWAN Tranceiver

The RS485-LN is a long range LoRaWAN node that provides spread spectrum communications combined with high interference immunity, whilst minimising power consumption. With the abundance of RS485/Modbus sensors available on the market, the optically isolated RS485 transceiver combined with the 7-24 Volt input range makes it suitable for many applications. Set-up is made simple via the programming port. Users can configure up to 16 custom commands that run on a time schedule, making the RS485-LN capable of communicating with multiple RS485 devices. Sensor responses can be sent individually or combined into one data record.

Please note that all LoRaWAN IoT Sensor nodes supplied by Telemetry2U will work with 3rd party network/application servers, like TTN, but if you would like to use your sensors on Telemetry2U’s advanced, plug-and-play IoT Platform, then you will need to purchase a license by selecting from the drop-down box below. Products purchased with a license will be shipped with the latest firmware and configuration optimised for T2U, with no programming or set-up required.

You can view a live demonstration of our IoT Platform here.
$139.00 +GST
Availability: In stock
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The RS485-LN runs on a time schedule, meaning it will wake up at intervals and process a set of pre-defined user commands over the RS485 network before processing responses and uploading data records to a wireless LoRaWAN network.  Users can pre-program up to 16 command sets that are processed each cycle.  Commands can be configured with a programable time delay where the RS485-LN will wait for a sensor to respond before moving on to the next command.  Users can also select how they want to 'cut' bytes from each sensor’s response. The response from each command can be sent as individual data records or as a single merged data record. Downlink commands can be sent to the RS485-LN via the server to change the 16 sensor commands, methods, and delays. However, configurations are recommended via the programming port for verification.

By default, the RS485-LN runs in class C mode, meaning its always awake listening for commands from the server. This allows users to poll a response and change the transmit frequency, as well as setting other configuration commands. Although many settings can be changed via the server, many other settings on the RS485-LN can be modified via AT commands on the serial port interface.  The programming cable is provided but an FT232RL USB-TTL converter is also required and is sold separately.  The communications port can also be used to upload new firmware via the built-in bootloader.   

The RS485-LN is simple to set up, given the vast range of sensors it can interface to. The device design includes a terminal block to simplify connections, a reset button and LED to view MCU and connection status. Mounting is made easy with the flanged enclosure and optional magnetic mounting hardware.

Attribute name Attribute value
  • LoRaWAN Class A & Class C protocol (default Class C)
  • Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
  • AT Commands to change parameters
  • Remote configure parameters via LoRa Downlink
  • Firmware upgradable via program port
  • Support multiply RS485 devices by flexible rules
  • Support modbus protocol devices
  • Uplink on periodically or polling
  • Downlink to send RS485 commands
  • Waste water treatment plants
  • Fish farming and aquaculture
  • Farming and agriculture
  • Labortory equiptment monitoring
  • Hospital equiptment monitoring
  • Factory management
Package contents
  • 1 x RS485-LN
  • 2 x DIN holders
  • 1 x LoRa Antenna
  • 1 x Programming cable
Dimensions and weight
  • Device size: 110 x 90 x 25mm
  • Device weight: 210g
  • Package size : 130 x 100 x 40mm
  • Package weight: 255g

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