WM Systems - Innovation in Smart IoT Systems Narrow Band RS485 Modem : WM Systems LLC – Innovation in Smart IoT systems

Wireless modem
Narrow Band
Product code:
Modem RS485 NB

Universal, external modem with wireless data transmitting capabilities, RS485 data connection.

The scalable modem is suitable for wireless transparent data transmitting of industrial and measurement systems to a remote location or distant IP address.

It also provides remote access, and remote configuration capabilities.

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

It can be operated from 230V AC power supply.

Design and connectivity satisfy the industrial standards.


• Supporting Narrow-Band Cat.M1/Cat.NB1 network
• RS485 data connection, transparent link
• RS232 serial port connection (for configuration)


• WM-E Term® configuration tool
• Alarm notification
• Transparent data transfer (client and server mode)
• Remote & safe firmware updates


Design & Construction
• Separated and sealed isolation from external devices
• It can be connected to any meter type
• It can be mounted to C-rail (by its adapter)
• Power supply from the metrology (AC power)


• High availability
• Event monitoring
• Supercapacitor option



  • Industrial companies
  • Production field
  • Measurement systems
  • Remote access, maintenance


The modem has industrial outfit and design, plastic enclosure and connector standards.



It is supporting the NB (narrow-band) mobile network standard, static IP addresses. Transparent data transmission, supporting TCP/IP.



RS485 data connection (2- or 4-wire) is supported for data communication.

RS232 local configuration port is assured for configuration.


Software features

  • Transparent data transmitting on wireless network
  • Auto network recovery
  • Remote configuration and firmware updates
  • Alarm notification
  • Realtime clock (optional)



  • Industrial RS485 Modem® (module order options)
  • AC power cable
  • Optional communication antenna (gained, SMA) – according to module selection
  • C-rail adapter
  • WM-E Term® configuration software


Technical data

Narrow Band RS485 Modem

Pay attention to the following products


WM-E Term configuration tool

WM-E Term configuration tool for the Elster, Honeywell, Itrón compatible metering modems


Narrow Band Modem for Elster / Honeywell Alpha meters

External, industrial Narrow-Band modem with serial port for the Honeywell / Elster A1500, A1700, A1800, A1140, A1160 Alpha electricity meters


Narrow Band Modem for Honeywell / Elster AS meters

Industrial Narrow-Band modem for the Honeywell / Elster AS220, AS230, AS300, AS1440, AS3000, AS3500 electricity meters


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