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ModBus RS485 Sensor/Adapter

ModBus-to-LoRa bridge for monitoring and controlling (Read&Write) all ModBus slave devices


  • ModBus RTU RS485
  • Battery (life up to 10 years) or external power supply 9-24V
  • Size 84x82x85mm
  • Frequency (MHz) EU: 863-870
  • Transmit Power (dBm) +14
  • Receiver Sensitivity (dBm) -140
  • Protocol: LoRaWAN, Class A
  • Application layer syntax: ZCL (ZigBee Cluster Library) - to be interpreted by the remote server
  • Transmission cycles: 15mn, 1h, 12h or configurable from LoRaWAN remote server
  • Activation method:
    • Activation by Personalization (ABP)
    • Over-The-Air Activation (OTAA)
  • Data encryption: AES128
  • Physical link: RS485, 2 line (protection against overvoltage termination resistor can be activated at set-up)
  • Serial link: UART, Half Duplex
  • Data rate (kbit/s): 1.2 / 2.4 / 4.8 / 9.6 / 19.2 / 38.4 / 57.6 / 115.2
  • Mode: RTU
  • Configurable parameters from the LoRaWANTM remote server:
    • Data rate, parity, number of data bits, number of stop bits
    • Wake-up periodicity to read/write ModBus
    • Transmit measurement periodicity
  • Transmit duty cycle: The LoRaWANTM remote server must properly set the transmission duty cycle to comply with ESTI EN 300-220-1 (page 24) regulation. This regulatory constraint limits the volume of transmitted data.
  • Option: Wake-up to read/write ModBus command from an external signal
  • Power supply:
    • 3,6V / 3600mAh lithium battery
    • 9V-24V / 100mW external power supply
    • Note: The bridge does not supply connected equipment
  • Autonomy within a +10°C to +25°C temperature range: >10 years when transmitting 4 bytes every 30mn in SF12
  • NFC Tag: Product number, serial number, manufacturing number
  • Buzzer: Configuration, Network pairing / unpairing
  • Magnetic Switch: Reset, ON/OFF
  • Dimension (mm): 84x82x85
  • Installation: Fixed with 2 screws + anchors (supplied) or DIN rail (with optional clips)
  • IP Class: IP61
  • Fire resistance: Non-flammable treated housing, UL94-V0HB
  • Operating temperature (°C): -10 / +50
  • Storage temperature (°C): -10 / +30
DIRECTIVES & STANDARD EN, 61000-4-2 EN 300-220-1 V2-4-1, EN 301 489 V1-6-1 CE, RoHS

IoT solutions with this device

Real-time monitoring of your equipment and goods. Regardless of whether they are outdoors, indoors or being transported.

Capture all important operational or consumption data with cost-effective IoT sensor technology and detect problems before they arise.