A compact 2.4 GHz wireless and embedded-processing module built on the Silicon Labs EFR32BG22 platform.
Designed by Ambimat as the hardware starting point for low-power connected products — and as the entry point into the engineering team that can take the rest of the product from architecture to manufacture.
Start a Connected Product Against Real Hardware
AmbiConnect B22 is intended for evaluation in low-power connected-device architectures: sensing and monitoring nodes, asset and presence devices, portable peripherals, and equipment that needs a short-range wireless link to a nearby handheld or gateway.
The module exists so that a conversation about a connected product can start against real hardware rather than a block diagram. Most connected-product programmes do not fail at the radio — they fail at the integration: the antenna environment, the power budget that looked fine on paper, the firmware that has to survive a field update, and the transition from a working prototype to a build that repeats. Evaluate the module, and Ambimat can take the work forward as far as a programme needs it to go.
Silicon Labs EFR32BG22
Built on the Silicon Labs EFR32BG22 system-on-chip platform, operating in the 2.4 GHz band.
Designed In-House
RF, hardware, firmware and security in one Ambimat team — the same team that delivers customer product-development programmes.
Low-Power Architectures
Targeted at low-power, battery-constrained product architectures where the power budget, not the feature list, sets the design.
An Integration Starting Point
Intended as an integration starting point, not a finished end product, with optional Ambimat design-in engineering for carrier boards, firmware and productisation.
Current verified information
The figures below are what Ambimat has verified for AmbiConnect B22 today. The figures a silicon vendor publishes for a system-on-chip are not the figures for a module built around it — current consumption, range, output power and temperature behaviour all depend on the board, the antenna, the enclosure and the firmware — so Ambimat does not restate an EFR32BG22 datasheet maximum as an AmbiConnect B22 specification.
| Item | AmbiConnect B22 |
|---|---|
| Platform | Silicon Labs EFR32BG22 |
| Frequency band | 2.4 GHz |
| Product status | Engineering / pre-release |
| Intended role | Wireless and embedded-processing module for integration into a customer’s own product |
| Integration and design support | Optional Ambimat engineering — carrier board, antenna and RF integration, firmware, and preparation for manufacture |
Detailed electrical, mechanical and RF specifications will be released following completion of engineering validation. Ambimat publishes a module-level parameter once it has been verified for the assembled module.
Product status
| Item | Current status |
|---|---|
| Product stage | Engineering evaluation |
| Commercial availability | Not yet released for sale |
| Wireless-technology qualification | Under review. No completed product qualification is claimed. |
| Geographic radio approvals | None published. Approvals are stated only once individually verified for this module. |
| Ordering codes | Issued with the applicable hardware revisions and configurations |
| Engineering samples | Availability on request — currently under preparation |
| Public datasheet | Issued on completion of engineering validation |
This records where the module stands in Ambimat’s own engineering process. It is a status statement, not a substitute for qualification and not a regulatory approval; everything in it may change before commercial release.
Typical applications
Three families of application, all at evaluation stage. These are applications the module is intended to enable, not deployments it has completed. Each requires its own product-level assessment.
Industrial sensing and retrofit
Condition and environmental monitoring points added to plant and buildings where running a cable is the expensive part. Battery-powered sensor interfaces where the power budget, not the feature list, sets the architecture. Machine-status peripherals reporting counters and faults from equipment that was never designed to report anything.
Asset, access and identity-aware devices
Asset and presence devices that confirm a thing, or a person, is where the system believes it is. Portable authorisation peripherals that grant a permission to a larger system rather than holding it. Commissioned sensors and service tools that must be brought into service by an identified person, with a record of who did it.
Connected-mobility and EV peripherals
EV-charger commissioning and service tools. Vehicle accessory and diagnostic peripherals that sit alongside a vehicle system rather than inside its safety path. Technician and asset-interaction devices. Local maintenance accessories around roadside equipment.
Mobility limitation. AmbiConnect B22 is not presented as a V2X radio, an automotive safety component, or an automotive-qualified module. Where it appears near a mobility system it is as a local commissioning, diagnostic or service interface. Mobility applications require product-level technical, environmental, regulatory and safety assessment. Ambimat’s V2X and connected-mobility work is a separate specialist engineering offering.
Development and integration
The module is the smallest part of a connected-product programme. Ambimat offers two structured engagements around it, and either can be taken without any commitment to further work.
Integration Review
A structured review of an intended architecture against the module: power budget, antenna environment, host interface, mechanical constraints, and the security and regulatory questions that will decide the programme.
Architecture Sprint
A focused engineering block turning a product idea into a system architecture: block diagram, interface decisions, power and connectivity strategy, security tier, and the risks that need retiring first.
Where the engineering fits
| Layer 1 — Product | The module, used independently. No services attached. |
| Layer 2 — Design-in | Integration Review or Architecture Sprint against the customer’s intended design. |
| Layer 3 — Custom engineering | Customer-specific hardware, firmware and connected-product development where the standard module is not sufficient. |
| Layer 4 — Productionisation | Support in moving from engineering prototype toward manufacture. |
Engagement is optional and priced separately from the hardware. Scope is agreed per programme after technical review, not offered as an off-the-shelf entitlement. The resulting product belongs to the customer; Ambimat supplies the module and the engineering. Ambimat is not a network operator and does not seek to run deployed connectivity, fleets or IoT networks.
What an evaluation looks like
Ambimat would rather have a short technical conversation before hardware changes hands than send a board into a design it does not suit. Useful things to tell us:
- The product, its power source and the expected battery life
- The enclosure, and what sits near the antenna
- The host controller and the interfaces it has spare
- The target markets, because that decides the approvals route
- What the wireless link actually has to do, and how often
- Programme volume and the timeline you are working to
From that, Ambimat can say whether the module suits the design as it stands, what would have to be characterised or changed first, and which of the two engagements — if either — is worth running. Evaluation does not commit either side to anything beyond it, and no engineering engagement is a condition of obtaining the module.
A development kit, reference carrier board and software package are part of the module’s roadmap. Neither the tools nor their release dates are established, and nothing here should be planned against.
Ordering and availability
| Item | Position |
|---|---|
| Ordering part number | Not yet issued |
| Commercial availability | Not yet released for sale |
| Pricing | Not published |
| Minimum order quantity | Not established |
| Lead time | Not established |
| Packaging | Not established |
| Engineering samples | Availability on request — currently under preparation. Discuss availability and timing with Ambimat directly. |
Ambimat module platforms
AmbiConnect B22 is one of two Ambimat OEM module platforms. They address different problems and are not alternatives to one another.
AmbiTap NFC Reader Module
An India-made contactless reader module on the NXP CLRC66303HNY NFC frontend, for EV chargers and embedded OEM equipment that needs to add NFC to an existing host controller.
AmbiConnect B22
This module — a 2.4 GHz wireless and embedded-processing platform on the Silicon Labs EFR32BG22, at engineering-evaluation stage.
See all Ambimat products, or read about our IoT and embedded product design work.