Scalable modem with wireless data transmitting capabilities, RS232/RS485 data connection.

Suitable for remote meter readout, meter data download and configuration on the provider’s request.

Design and connectivity meets the vendor meter standard.

Forms part of the AMI (Advanced Metering Infrastructure) of the utility company.


• Supporting LTE 450 communication Cat.1 (Telit module®)
• RS232/RS485 (upon request), transparent link


• WM-E Term® tool, optional DMSet® software
• Immediate alarm notification
• „Push” data sending (Ftp or IEC data push, by SMS triggering)
• Scheduled data sending or triggered by an alarm
• Remote & safe firmware updates

Design & Construction

• Separated and sealed isolation from the meter
• Compatible with Elster® A1500 Alpha, A1800 Alpha, A1140 Alpha, A1160 Alpha, A1700 Alpha meters
• It can be mounted on any meter as external modem
• Power supply from the metrology (AC power)
• Power input surge protection from 4kV up to 12kV
• Supercapacitor option


• High availability
• Event monitoring
• Data encryption



  • Utility companies, service providers
  • Electricity metering (remote readout)
  • Meter data transmission to the centre
  • Remote operation/tarif mode switch
  • Connecting meters to the Smart Grid
  • Remote access, maintenance


The modem unit fits into the meter enclosure.



The modem is supporting the LTE 450 Cat.1 mobile network standard, static IP addresses. Transparent data transmission, supporting TCP/IP.



RS232, RS485 data connection (2- or 4-wire) can  be ordered by request.


Software features

  • Auto network recovery
  • Remote data download (such as metering values, parameters, load profile, log)
  • Remote configuration and firmware updates
  • Alarm notification and reports
  • Realtime clock (optional)



  • WM-E1S LTE 450®
  • RS232/RS485 connection cable
  • LTE 450 MHz, gained SMA antenna (optional)
  • Optional DIN-rail
  • WM-E Term® configuration software


Technical data


Pay attention to the following products


WM-E Term configuration tool

WM-E Term configuration tool for the Elster and Honeywell compatible metering modems (WM-E1S and WM-E3S) and for our industrial RS485 modems



CDMA 450 / 2G / 3G / 4G / LTE-M / Narrow Band modems for Honeywell / Elster Alpha A1500, A1700, A1800 and the A1140/A1160 electricity meters



CDMA 450 / 2G / 3G / 4G / LTE-M / Narrow Band modems for Honeywell / Elster AS220/AS230/AS300 and AS1440, AS3000/AS3500 electricity meters


Load Control Box

Scalable & smart street lighting with remote control, central switching, monitoring and wireless networking access


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