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EBVchips: Maia

Maia - w-Mbus module with OMS stack

High quality, low power RF module in a compact form factor including an industry proven wireless M-Bus and OMS-layer to OMS 3.X and OMS 4.X specifications.

EBVChips - Maia description (LC)

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Maia is a single embedded low cost wireless M-Bus RF Module developed specially for the AMR (Automatic Meter Reading) smart metering and smart grid infrastructure where the Wireless M-Bus standard (EN13757-4) and OMS standards are used.

Its high quality, small form factor: 15mm x 14mm makes it ideal for SMD assembly. The module offers low power consumption which is achieved with STM’s ultra-low power microcontroller STM 32L05 and SPIRIT1, the low power Sub-GHz data rate transceiver. Also on board is an ultra-miniature balun, BALF-SPI-01D3 matching SPIRIT1 and supporting the connection to an external antenna, therefore saving space and cost.

In addition, Maia includes an industry proven wireless M-Bus and OMS-layer to OMS 3.X and OMS 4.X specifications.  As the user can integrate their region-specific application layer there is no need for an external host controller.  The module is also pre-certified and conforms to EUR & TTE directives.

Key features:

  • Small size 15 mm x 14 mm for SMD mounting
  • 1.8 – 3.8 V supply voltage, ultra low power modes
  • Low power down to 0.27uA
  • Completely shielded
  • Output power: +12dBm
  • Conforms with EU R&TTE directive
  • Wireless m-Bus EN13757-4:2013 and OMS stack with application examples for several kind of meters
  • Users application space for customer application
  • Targeted for easy and fast time to market wireless m-Bus and OMS applications


Application examples:

  • Wireless m-Bus
  • Automatic Meter Reading (AMR)
  • Advanced Metering Infrastructure (AMI)
  • Gas and water meters
  • Electricity meters
  • Heat meters, heat cost allocators
  • Readers and concentrators

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