CDMA 450 / 2G / 3G / 4G / LTE-M / Narrow Band modems for Landis+Gyr E350 / E450 / E550 electricity meters (ZMD310, ZMD410 types)

Electricity meter
Smart Metering
Wireless access
RS232 / RS485
FW Updates
Remote Access
SKU: WM-E1SL Category:

Wireless communication modem that has been specifically designed for use with Landis+Gyr® electricity meters.

The smart modem has RS232 and RS485 (2 or 4-wire) connection capabilities, and it provides transparent data link to the HES centre, through the CDMA450 / 2G / 3G / 4G LTE and Narrow Band wireless network.

Our modem forms part of the AMI (Advanced Metering Infrastructure) of the utility company.

Suitable for remote meter readout of electricity meters, meter data download and configuration on the provider’s request by schedules or on-demand.

Due the interfaces, it can be also used as a universal external modem – as it is connectable to any meter type.


Main features

  • Supporting CDMA 450, 2G, 3G, 4G, LTE Cat.M and Narrow-Band Cat.NB networks
  • It can be installed into the meter enclosure and fastened securely
  • Design & connectivity satisfy meter manufacturer standards
  • Sealed and separated from the meter
  • Compatible with Landis+Gyr E350, E450, E550 electricity meters (ZMD310, ZMD410 types)
  • Power supply from the metrology (AC power)
  • Optional surge protection from 4kV up to 12kV
  • „Push” data sending (FTP or IEC push, SMS trigger)
  • IEC 62056-21 protocol
  • Scheduled data sending or triggered by an alarm
  • Remote switch of the meter operation mode
  • It can also be operated from a private network with NAT, the modem connects to the HES (Head End System)
  • Remote & safe firmware updates
  • Free WM-E Term® configuration tool
  • Supercapacitor option



  • Utility companies
  • Meter data transmission to the HES centre
  • Connecting meters to the Smart Grid

Technical details

Design and outfit

  • The modem is installable inside the meter enclosure
  • RS232, RS485 interface connection (RJ12 outfit)
  • AC power by metrology (optional DC power)



  • Landis+Gyr® E350, E450, E550 electricity meters (ZMD310 and ZMD410 types)
  • Installable to any meter as external modem (universal)



  • „Push” data sending (FTP or IEC push, SMS trigger)
  • CSData call (2G)
  • IEC 62056-21 protocol
  • Scheduled data sending or triggered by an alarm
  • Immediate alarm notification (power loss, input status)


Accessories (order option)

  • RS232 and/or RS485 (2 or 4-wire) connection cable
  • SMA antenna (50 Ohm)
  • DIN-rail mounting clips
  • WM-E Term® configuration software (mass fw update, actualization of settings)


Technical data



Product Datasheet

User Manual

User Manual

WM-E Term User Manual

WM-E Term Appendix

WM-E Term v1.3.38 configuration tool

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