iM891A-XL-wM-Bus: Metering make easy

iM891A-XL-wM-Bus: Metering make easy

iM891A-XL-wM-Bus: Metering make easy

The iM891A-XL is an ideal radio module for numerous applications such as smart metering, wireless M-Bus gateway expansion, IoT sensors, as well as home-, building- and industrial-automation. The iM891A-XL Wireless M-Bus module offers a cost-effective RF solution for smart metering applications in the 868 MHz frequency band. It supports all major unidirectional and bidirectional wireless M-Bus modes (S, C, T and combined C/T) with packet formats A and B as well as the OMS security modes 5 and 7.
iM891A-XL-wM-Bus: Metering make easy

Perfect solution for smart metering applications

With an integrated +22 dBm power amplifier and a sensitivity of -149 dBm, a sensational link budget of 170 dB can be reached. This makes the iM891A-XL an ideal solution for smart metering applications connecting water, heat, electricity and gas meters with data concentrators.

The module has an exceptionally small footprint (16.8 mm x 18.6 mm), comes equipped with a serial interface as well as analog/digital inputs and outputs to accommodate interfaces with a customer’s system.

iM891A-XL-wM-Bus: Choose the right connection for your needs

With u.fl connector connection
With u.fl connector connection

This iM891A-XL wireless module comes equipped with a u.fl connector, enabling seamless antenna attachment for reliable signal transmission. The u.fl connector provides a robust and secure interface, ensuring optimal performance in various applications.

Without u.fl connector connection
Without u.fl connector connection

For applications where external antenna connection is not required, the iM891A-XL wireless module is also available without a u.fl connector. This option offers a streamlined design and reduced cost, making it suitable for embedded applications or those utilizing integrated antennas.

Wireless M-Bus Gateway stack:

The Wireless M-Bus Gateway firmware has been design to allow remote monitoring and management of utility meters without the need for physical access to each individual meter.

The firmware collects data from the wireless M-Bus devices and for further processing and analysis in the corresponding central management system or database. It also provides additional functionalities such as data decryption (Mode 5 and 7), protocol conversion, and integration with other smart systems or IoT platforms.

  • >> Scroll table horizontally

    Frequency rangeISM Band 868 MHz
    Modulation(G)FSK
    OMS security modes5 and 7 (other on request)
    RF output powerup to +21 dBm (50 ohm pad)
    ControllerCortex® M4
    AES encryptionAES256 hardware engine
    Receiver sensitivity-106 dBm
    RF datarate100 kbps
    wM-Bus ModesS, C, T, and combined C/T
    Operating voltage1.8 V to 3.6 V
    Current consumptionsleep mode: ~ 1.4 mA (typ.)
    ~ 7.2 mA (Rx)
    ~ 50 mA (Tx @ 3.3 V/ Power Level Setting 14)
    InterfacesUART
    SPI
    I²C
    IOsDigital IOs
    Analog Inputs
    Dimension (LxW)16.8 x 18.6 mm
    Operating temperature-40°C to +85°C
Contact us today to discuss your needs Use the strengths of the IoT with IMST GmbH. Get in touch

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