868 MHz
Wireless M-Bus ready



  • Description

    EMB-WMB868  is a 868 MHz wireless module that combines high performance to small dimensions and low cost, providing the system integrator a simple and easy way to add Wireless M-Bus connectivity and multi-hop networking into existing products. Notable features include:

    • output power can be set up to +15 dBm (32 mW)
    • sensitivity up to -122 dBm
    • extremely reduced power consumption gives access to those long lasting battery life requirement imposed by the metering market (up to 2 μA in sleep mode with an RTC clock running)
    • together with the Embit Wireless M-Bus Stack the EMB-WMB868 is compliant to the standard EN 13757-4:2013
    • open platform

    The EMB-WMB868 modules can be provided with a W-MBus stack specifically developed by Embit for the platform that allows to integrate the module in the desired system without effort and simplify the interaction in WMBus networks.

    The EMB-WMB868 modules ship programmed with EBI-WMBus which allows the customer to use the modules as a simple, ready-to-use modem (using AT-like commands over UART; see EBI protocol page for more information). The evaluation kit EMB-WMB868-EVK is strongly suggested to customers willing to develop their own firmware applications, since the kit provides all tools required to download a custom firmware on the module.

  • Technical Specifications
    • Based on TI MSP430 & CC1120
    • Program memory: 128 kB / 96 kB / 64 kB
    • RAM: 10 kB / 8 kB / 6 kB
    • Output power (MAX): +30 dBm / +27 dBm / +15 dBm
    • Sensitivity: -122 dBm
    • AES software encryption available
    • Form factor: 29 x 22 mm
    • Power consumption (deep sleep): 2 µA
    • Supply voltage: 3.3 V

  • Network Topologies Supported
    Topology Firmware stack Notes
    NetworkTopology-P2P-small Embit Wireless M-Bus stack

     Supported also via UART commands, thanks to Embit EBI-WMBus.
    NetworkTopology-Star-small Embit Wireless M-Bus stack  Supported also via UART commands, thanks to Embit EBI-WMBus.
    NetworkTopology-Tree-small Embit Wireless M-Bus stack  Contact us for more information.
  • Firmware Support

    Supported firmware stacks:

    Supported EBI variants:

    • Embit Binary Interface for WMBus protocol: EBI-WMBus

    All the firmware stacks and the documentation is on the CD-ROM included in the Evaluation Kit.

  • Certifications

    EMB-WMB868 wireless modules are CE certified and compliant to ETSI regulations.

    For more informations about certification of your final product (regarding both conducted and radiated emissions tests) and compliance with European regulations, you can contact us; indeed pre-compliance assistance is one of Embit services.

  • Documentation

    Brochure: EMB-WMB-brochure.pdf
    Datasheet: EMB-WMB.pdf

  • Ordering Information

    Part number: EMB-WMB868

    Note: EMB-WMB868 modules ship programmed with EBI-WMBus.

    For quotes, please use the quotation form or contact our sales area at .

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