+ 44 1223 422345 info@amiho.co.uk
AMIHO Wireless Meter Bus and LoRa module

Wireless Communications

Module operation

Where do I start?

How to Buy?

Compliance and certification

Wireless Communications

  • Why choose Wireless Meter-Bus?MBusWirelesshome

Wireless Meter-Bus is the European standard (Meter-Bus) EN13757, designed for electricity, gas and water meter communication. The communication can be bi-directional so is ideal for advanced metering infrastructure (AMI).

Many European and other regions have chosen Wireless M-Bus for their Smart Meter programs.

It is also suitable for other devices needing communication such as alarm systems, lighting and heating control and IoT.

It uses the ISM band of the spectrum which is licence-free.

  • What is LoRa®?LoRa logo AMIHO

LoRa® is a LOng RAnge modulation technology using spread spectrum technique. Its key benefit is to extend the radio range up to 15 km.

It uses low power, so is suitable for battery operated devices.

Using LoRa® in addition to Wireless Meter-Bus can enable communication to hard-to-reach meters and devices.

Find out more on our Technology page

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Module operation

  • Can AMIHO modules transmit and receive in modes C1 and T1?amiho-product

Yes, meters in C1 and T1 can transmit and concentrators (other devices) can receive.

  • Do AMIHO modules have GPIOS? Can they be configured for interfaces such as: I2c and SPI?

Yes, there are GPIOS on modules and they are configurable for I2c and SPI interfaces

  • Can AMIHO modules be used on meter and concentrator side?

Yes, they can transmit and receive from either

  • Can AMIHO modules establish bidirectional communication using mode C2?

Yes our products are designed for 2-way communication

  • Can AMIHO modules be used for meter and concentrator to communicate in mode C2?


  • Can AMIHO modules establish a bidirectional communication without additional hardware or controller?

YesSmarthome without logo

  • How many meters can be addressed at the same time in a network?

We have a simple way of forming groups of meters. All devices are able to listen on the network.

  • Can the RF hardware also be used at other frequencies like 434 MHz?

Modules are tuned to a specific frequency band. We also offer the versatile AM093 POC module that operates at both 868 MHz and 169 MHz and has LoRa® range extension. This is ideal for testing your application/smart meter needs regarding range as you can add in 169 and the LoRa® option if the range needs extending.

  • We need access to the register settings as we want to adapt the module to our needs – would we have access to register settings for RF and controller?

Yes. The MCU is accessible on all our modules for your own application code. The memory space varies from module to module depending on the memory available and stack size.

  • Why is the AM093 module referred to as ‘proof of concept’ module?

The AM093 has dual band WMBus (868 and 169) MHz and LoRa® capability included. We believe that this provides an excellent way to test and prove your application and make a decision on which frequency and technology you will need for a large scale application.

The AM093 would be a high cost option as a production module and we have therefore developed the AM091 (169 MHz and LoRa®) and AM094 (868 MHz and LoRa®) as single band modules for volume applications.

Should there be a demand for a dual-band production module, we can provide all the relevant testing and BOM reduction.

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Bridging technology from AMIHO the TRIoT® stack: wireless M-Bus, LoRa and LoRaWAN all on 1 device at 868 and 915 MHz.

  • How many meters I can connect to one bridge: the AM094-LW module with TRIoT software stack?

Depending on the application, the bridge can be connected to hundreds of meters however the max number that we advise to connect is up to 20. Once the modem receives a signal in wM-Bus it is bridging to LoRa/LoRaWAN and this process takes time. So messages from other meters, which are trying to get through with their data at the same time, can be lost.

Where do I start?AE093 EVK web

We suggest you start with one of our evaluation kits, which has everything you need to test our products.

  • What does the evaluation kit allow me to test?

We provide software as part of the evaluation kit called PC Tool, which allows you to perform and test

  • a modem link
  • meter simulation
  • range testing

In addition the AE093 Wireless M-Bus and LoRa® evaluation kit enables range testing using Wireless M-Bus at 868 MHz and 169 MHz and LoRa® (up to 15 km range), so you can decide which technology you need for your application in future with one kit.

  • How do I get started with the evaluation kits?

The kits come with a complete quick start guide.

In addition we have some helpful tutorial videos on our You Tube Channel

  • What do I do if I’m still having trouble?

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How to Buy?Order now button

All AMIHO products can be ordered direct from us.

  • Can we buy the software stack and drivers only?

Yes, AMIHO stack and drivers are available for licensing.

  • We would like to use the software stack on our own hardware. Can you port it to a specific MCU and/or radio?

Yes, we offer development and support services and our expert team is experienced at porting our software.

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Compliance and certification  Compliance button

  • What about CE Compliance and Marking?

As a component supplier we can only demonstrate compliance to regulations (EN300220) and we test our modules to comply with these regulations.

It is the responsibility of the end manufacturer to show compliance to R&TTE (which includes product EMC and functionality testing) in their products that are shipped to customers.

To help this process, we can provide test results from an external test house for our production modules (AM090, and forthcoming AM091, AM094 and AM060 modules) showing compliance to EN300220 and for very limited applications R&TTE.  These results help our customers do their final product testing – and in the case of radio conformity, they save manufactures repeating some quite complicated tests and shorten the overall test process. 

  • Why is there no shielding or metal can on your modules?

The shielding on most ISM band modules is usually unnecessary, and several manufactures (including us) supply modules without metal cans as standard. The primary electrostatic shielding of the components comes from the ground-plane on the PCB and the metal can is mainly ornamental. Even module manufacturers that use metal shields as standard may provide a lower cost option for the module with no shield fitted.

We hope these FAQs have helped you. If you have any further enquiries, or would like to order our products