Wireless M-Bus Module WMB14-868-II

Product overview

The module complies with European wireless communication hardware testing standards. The size is only 13.7×25.4×3.3mm, which is convenient for users to integrate into user equipment. Support wireless M-Bus protocol S, T, C working mode, can work in slave, maser, repeater mode, can work in sleep mode with extremely low power consumption, and wake up through the serial port. When using, as long as the board is attached to the user board, it can be used through a simple communication interface protocol, which is simple and convenient.

Functional features

  • Support the three working modes of S, T and C specified in EN 13757-4:2013
  • Support PHY-A and PHY-B specifications in OMS
  • 13 communication channels
  • Support seven levels of transmit power
  • Provide UART communication interface
  • Parameter configuration through AT commands
  • Can get accurate RSSI value
  • The current power supply voltage value can be obtained through AT command
  • Capable of temperature detection
  • Low power consumption management, automatic sleep function
  • Encryption and decryption function
  • Automatic response function
  • Support FOTA
  • Repeater function
  • Technical ParametersView details

    Modulation method: GFSK

    Working frequency band: 868.0 ~ 870.0 MHz

    Air rate: 4.8/32.768 /100 kbps

    Serial communication rate: 2400/4800/9600/19200/38400/57600/115200bps

    Maximum transmit power: 14dBm

    Transmission harmonics: ≤-38dBm

    Receiving sensitivity: -108dBm @ 32.768kbps

    Working voltage: 2.0V~3.6V

    Current characteristics:

    Transmitting current: <22mA@14dBm

    Receiving current: <10mA

    Sleep current: <1μA

    Working temperature: -40ᵒC~+80ᵒC

    Working humidity: 10%~90% RH, no condensation

    Dimensions: 13.7(W)×25.4 (L)×3.4(H) mm

    Weight: 1.7g

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