WM-E1SI Modem for Itron Meters

Cellular modems for Itron electricity meters – 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-E1SI Category:

This cellular modem has been specifically designed for use with specific Itron® electricity meters.

The modem has RS232/RS485 connection capability, 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 Itron® ACE6000, ACE8000, SL7000 electricity meters 
  • 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/RS485 interface connection (RJ12 outfit)
  • AC power by metrology



  • Itron® ACE6000, ACE8000, SL7000 electricity meters



  • „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-E1S sample configuration for WM-E Term

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