We offer our retrofit 4G smart metering devices for 2G migration of Itron electricity meters

Electricity meters
Smart metering
Module options
Data connection
FW updates
Retrofit solution


The world of wireless communication, of M2M & IoT have known for years that the obsolete GPRS (2G) networks should be migrated to the state-of-art 4G LTE network worldwide.

Thus, the single most important challange nowadays the IoT world is faced: how to migrate the obsolete 2G/GPRS, 3G communication devices to the latest 4G LTE technology?

No need to worry though – WM SYSTEMS LLC is there for you!

The upgrade of the currently used 2G/3G communication devices to the 4G-level should be performed in the near future. Utility companies and energy providers dispose of a rather tight timeframe for this migration.

Our wireless modems represent a future-proof migration solution to the LTE network with the same functionality, on higher data speed.

For retrofit purposes, we offer our 4G devices with migration-platform modules with the same connection and meter manufacturer standards’ compatibility and the usual outfit – with 2G fallback compatibility (if you still need to use it).



  • installed meters can be used without changing metrology
  • snap-in modems (drop & plug, easy installation)
  • 4G with 2G fallback (backward compatibility with current systems)
  • long-term solution: the 4G LTE will be used for 10 years or more


   for Itrón® ACE6000 / ACE8000 and ACE SL7000 meters

  • RS232/RS485 compatible RJ45 connection
  • It provides transparent data link to the HES centre (remote meter readout of meters)
  • Snap-in modem, installable into the meter enclosure
  • Design & connectivity satisfy Itrón® standards
  • Power supply from the metrology (DC power)
  • „Pull” data sending (for HES request)
  • Supercapacitor / IEC 62056-21 protocol
  • Remote & safe firmware updates, configuration by SMS text, free configuration tool


Industrial RS485 Modem®
   Universal external modem for Itrón® ACE6000/ SL7000 meters   

  • RS485 (2 or 4-wire) connection / RS232 (optional)
  • It provides transparent data link to the HES centre (remote meter readout of meters)
  • Meter data DL and configuration on the provider’s request on pre-determined schedule / on-demand
  • It can be installed and fastened by external (also has a C-rail adapter option to mount/fix)
  • Design & connectivity satisfy Itrón® standards
  • External AC power supply is required
  • „Push” data sending / IEC 62056-21 protocol
  • Scheduled data sending / trigger by alarm
  • Remote & safe firmware update


More information about the Related Products:



You can download this article here:


Technical details


modem for Itrón® ACE6000 / ACE8000 / ACE SL7000 meters

WM-E2S modem



for Itrón® ACE6000 / SL7000 meters (Universal external modem with compatible connection and firmware)

External universal modem



Solution Flyer – Smart Electricity Metering Modems
Solution Flyer – Itrón Retrofit 2G to 4G Flyer
Datasheet – WM-E2S modem (CDMA450 / 2G / 3G / 4G LTE / LTE Cat.M / NB)
Datasheet – Industrial RS485 Modem (CDMA450 / 2G / 3G / 4G LTE / LTE Cat.M / NB)

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