LTE Cat.M / Cat.NB modem for Honeywell / Elster AS220/AS230/AS300 and AS1440, AS3000/AS3500 electricity meters
Electricity meter
Smart Metering
Cat.M / Cat.NB
FW Updates
Remote Access
SKU: WM-E3S NB Category:

Wireless communications modem that has been designed specifically for automatized remote readout of Honeywell® / Elster® AS type electricity meters.

The device can be ordered with various wireless modules and several expansion boards and interfaces.

You can save money by using our modem because furthermore there is no need for manual readout of the meter systems.

The modem can be installed into the meter’s enclosure.

It provides transparent „pull” or „push” data link to the HES center, through the wireless network.

It is suitable for remote readout of registers, consumption data of the electricity meters, download of load profile at provider’s request by schedules or on-demand – „by pull” or „push” data sending method.

With the optional MBUS expansion, it can be also connected for water and gas meters. The device is configurable by our WM-E Term® software.


Main features

  • LTE Cat.M / Cat.NB wireless module – „fallback” features
  • It can be assembled into the meter’s enclosure and fastened securely (sealed and separated from meter)
  • Design & connectivity meets with meter standards
  • Power supply (AC) from metrology
  • Compatible with Elster® / Honeywell® AS220/AS230/ AS300, AS1400, AS3000/AS3500 meters
  • Surge protection option (from 4kV up to 12kV)
  • „Pull” data sending (for HES request), alarm triggered
  • „Push” data sending (FTP or IEC push, SMS trigger)
  • IEC 62056-21 protocol
  • Data encryption, TLS
  • Scheduled data sending or triggered by an alarm
  • Remote & safe firmware update and configuration
  • Supercapacitor option (for power outage), notification
  • Expansion module options



  • Utility companies
  • Meter data transmission to the HES centre
  • Smart Metering
  • Industrial measurement

Technical details

Design and outfit

  • The modem PCB can be installed inside the meter enclosure
  • AC power by the metrology
  • Compatibility with Honeywell® / Elster® AS220/AS230/AS300, AS1440 and AS3000/AS3500 electricity meters
  • Compatibility with wired MBUS water & gas meters


Expansion options

  • RJ45 Ethernet interface
  • Relay board (switch operation/tariff)
  • Customer Interface outfit (RJ12, 6P6C)
  • MBUS board
  • Supercapacitors (against power outages)



  • „Pull” data sending (for HES request), or alarm triggered
  • „Push“ data sending (Ftp or IEC data “push”, SMS triggering)
  • IEC 62056-21 protocol Mode C / Data encryption, TLS
  • Transparent & non-transparent MBUS communication
  • Scheduled data sending trigger by an alarm
  • Immediate alarm notification (power outage, status)



  • Optional SMA antenna (50 Ohm) – upon request
  • WM-E Term® configuration software


Technical data



Product Datasheet

Installation Manual (WM-E3S)

WM-E Term User Manual
WM-E Term v1.3.43 configuration tool

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