Wireless M-Bus Module 169 MHz

• Low-cost radio module 169 MHz
• Frequency band 169.400 - 169.475 MHz
• RF output power 14 dBm
• Wireless M-Bus EN13757 part 4
• Operating mode: N
• Range up to 5000 m line of sight
• Small form factor: 27 x 17 x 4.0 mm
• Low-power functions (Wake-On-Radio)
• Adjustable RF data rates
• Communication via UART/SPI Interface
• AES128 data encryption 
• Complies with EU R&TTE  1999/5/EC directive
• Available on Tape & Reel for SMD mounting
• Pin-to-pin compatible with radio modules:
  AMB8426-M Low-Cost Wireless M-Bus 868 MHz
  AMB8626-M High Power Wireless M-Bus 868 MHz

The Wireless M-Bus standard specifies the communication between water, gas, heat and electricity meters and concentrators. The module supports operating modes "N" to meet the requirements of one-way and two-way data communication in stationary and mobile systems.

The AMB3626-M is an all embedded low-cost wireless M-Bus radio module, which operates in 169 MHz frequency band. The integrated protocol controls the entire data communication. Data packets are built and transmitted according to EN13757 part 4 specification. Configuration of parameters is handled via the UART interface and a control pin. Measured field strength (RSSI value) offers the option of enhancing quality of the radio link.

The customised application layer can be fully integrated in the radio module, thus eliminating the need for an external host microcontroller. The radio module supports the AES-128 encryption standard. A very low-power mode ensures long battery lifetime.

The module is pre-certified for operation under the European radio regulations for license-free use. Due to its outstanding RF characteristics the module achieves a range of up to 5,000 metres line of sight. The AMB3626-M is a surface-mounted module and is available on Tape &Reel for volume production.

Interfaces
The AM3626-M is connected to a host system via the UART/SPI interface with a data rate of up to 115.2 kbps. When using appropriate firmware, the module is also suitable for autonomously recording digital or analogue signals. Other pins can be used for data flow control and to switch between operating modes.

Range of Applications
The radio module is designed for automatic meter reading applications for wireless data transmission according to the Wireless M-Bus specification. The radio module is designed to be integrated in meters, Concentrators and mobile metering devices. Other applications are conceivable. Its compact dimensions and low-power consumption make the radio module ideal for battery-powered devices.