WM-E1SL Modem for Landis Meters

Cellular modems for Landis+Gyr E350 / E450 electricity meters (ZMD310, ZMD410 types) – CDMA 450 / 2G / 4G LTE Cat.1/ Cat.M / Cat.NB

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

This cellular modem has been specifically designed for use with specific Landis+Gyr® electricity meters.

The modem has RS232 and RS485 (RJ12) connection capabilities, and provides a transparent data link to the HES, through the CDMA450 / 2G / 4G LTE / Cat.M 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.

It is possible to use this device as a universal external modem – as it you can connect it to almost any meter via RS232/RS485.


Main features

  • Support for CDMA 450, 2G, 4G LTE Cat.1, Cat.M and 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 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



  • Remote Automatic Meter Readout of the Electricity Meter
  • Operational check
  • Maximum Demand Reset
  • Meter synchronization

Technical details

Design and outfit

  • The modem is installable inside the meter enclosure
  • RS232 and/or  RS485 interface connection (RJ12 outfit) – type request option
  • AC power by metrology



  • Landis+Gyr® E350, E450 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
WM-E Term User Manual
WM-E Term Appendix
WM-E Term v1.3.48 configuration tool
WM-E Term Appendix
WM-E1SL sample configuration file (for WM-E Term)

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