Universal RS485 modem with LTE Cat.M / Cat.NB communication and DIN-rail adapter for the industry and metering systems

Wireless modem
Cat.M / Cat.NB
DIN-rail Mount

Universal, external modem with cellular NB-IoT transmission capabilities, RS485 data connection (and optional RS232 outfit).

The scalable modem is suitable for wireless transparent data transmission of industrial and measurement systems or meters to a remote location or distant IP address, HES centre.

The design and interface outfit meets with the industrial standards and the strict requirements and the brand meter manufacturers’ products.

It also provides remote access, and remote configuration capabilities.

The modem has a DIN-rail adapter, it’s easy to fix or mount onto a rack or rail.

It can be operated from external 230V AC power supply.

Design and connectivity satisfies the industrial requirements and brand meter manufacturers’ standards.


Main features

  • Wireless module: LTE Cat.M / Cat.NB with optional 2G “fallback”
  • Design & connectivity meets with meter standards
  • Installable to any meter as universal, external modem
  • Power supply (AC) is required (optional DC can be used)
  • RS232 and RS485 port (connector outfit by order)
  • Transparent link / IEC 62056-21 protocol
  • Remote & safe firmware update and configuration
  • Supercapacitor option (for LastGASP SMS notification)
  • It can be mounted on a DIN-rail (by its adapter)



Design and outfit

  • The modem is installable inside the meter enclosure
  • RS232 interface connector options: D-SUB9 / RJ12
  • RS485 interface connection options: 2-wire / 4-wire / RJ12
  • AC power from the meter (optional DC power)



  • Installable to any meter as universal, external modem



  • Transparent communication / IEC 62056-21 protocol
  • Optional CSD (2G) communication
  • Scheduled data sending or triggered by an alarm
  • Immediate alarm notification (power loss, status)


Accessories (order option)

  • RS232 and RS485 adapter cable
  • SMA antenna (50 Ohm)
  • DIN-rail mounting clips
  • WM-E Term® configuration software
  • You can manage the device by Device Manager® software


    Technical data

    Industrial RS485 Modem

    Product Datasheet

    User Manual

    WM-E Term User Manual

    WM-E Term configuration tool

    Parameter Description

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