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Inovelli has started development of the VTM32-SN, a White Series Matter-over-Thread wall switch that is planned to include built-in 24 GHz mmWave presence sensing. The project is in hardware and firmware development; the company has not announced a price or preorder date, and planned features and schedule may change.
Inovelli has started development of a new White Series wall switch that pairs Matter over Thread with built-in 24 GHz mmWave presence sensing. The planned VTM32-SN would bring the company’s Project Linus design to its Matter-enabled lineup, but it remains an early-stage project and its features and schedule are subject to change.
Inovelli says it has completed the initial product requirements and research and development analysis, and that hardware design and firmware work are now underway. The company plans to build 15 beta samples for testing scheduled from November through Dec. 20. The current plan puts certification, including Matter certification, between December and Feb. 1, 2027, with mass production targeted for March 20. Those dates are development targets, not confirmed release dates.
The proposed switch is based on Inovelli’s existing Project Linus presence-sensing dimmers, sold in its Zigbee Blue Series and Z-Wave Red Series. The new model would extend that design to the White Series, which uses Matter over Thread. Inovelli’s current hardware target includes a center-rest paddle, configuration and favorite button, addressable RGB LED bar and 24 GHz radar sensor. The company is also investigating a built-in lux sensor, but has not confirmed it as a final feature.
Other planned capabilities include dimmer or on/off operation, power monitoring, smart bulb mode, configurable ramp rates and dimming limits, leading- and trailing-edge dimming, over-the-air updates and multi-way installations. Inovelli is also targeting operation without a neutral wire, a design challenge for a Thread device. These items describe the current project plan; Inovelli cautions that features can change during development.
Presence Sensing Comes to White Series
The project could close a feature gap between Inovelli’s Matter lineup and its established Zigbee and Z-Wave switches. The company already sells Project Linus presence-sensing dimmers on those platforms, while the White Series has so far centered on more conventional load control. If the VTM32-SN reaches production with the planned sensor, Matter users could get a wall switch that responds to room occupancy even when a person is sitting relatively still.
That is different from relying only on passive infrared motion sensing, which can miss small movements. The source report says 24 GHz mmWave is intended here to support room-occupancy detection, not detailed tracking of people or their positions. Radar performance can also produce false detections in complex rooms, so practical results will depend on sensor tuning and installation conditions. Beta testing may help reveal how well the switch distinguishes actual occupancy from unwanted triggers.
The proposed combination also matters for smart-home control: a wall switch can remain a familiar physical control while providing occupancy data to compatible automations. However, interoperability and local control depend on the final firmware, supported Matter functions and the systems with which the switch is used. The announcement does not establish how every planned feature will work across different Matter platforms.
Matter over Thread smart light switch
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From Linus to Matter over Thread
The White Series is Inovelli’s Matter-over-Thread counterpart to its Zigbee Blue Series and Z-Wave Red Series. It began with a 2-in-1 switch now sold as the White Series Smart Dimmer. The lineup has since added an on/off switch with humidity sensing, a dedicated fan switch and a fan/light canopy module. The VTM32-SN would add a presence-sensing option rather than introduce an entirely new switch concept.
Inovelli has also been working on Matter binding, which lets supported devices control one another directly. The source report says recent White Series beta firmware expanded that work to group binding, allowing a switch to target a Matter group instead of setting up separate bindings for each light. The project announcement does not confirm that the new switch will support Matter 1.6.1’s newer Groupcast architecture. Any use of that architecture remains a possibility, not a stated VTM32-SN feature.
Inovelli is opening parts of development to its community through feature requests, project updates and beta testing. The company says contributors whose ideas are used may receive credit and a free device. Community participation can provide feedback on real-world operation, but it does not guarantee that requested features will be adopted.
“The company has completed the initial product requirements and R&D analysis, with hardware design and firmware development now underway.”
— Inovelli, as described in the project update
Features and Release Timing Remain Open
There is no announced price or preorder date. The November-to-Dec. 20 beta window, certification target through Feb. 1, 2027, and March 20 mass-production target could change. The source does not provide a confirmed retail launch date or say when customers would receive units.
The final sensor performance and the status of the proposed lux sensor are also unresolved. Although the current plan specifies 24 GHz mmWave, the announcement does not give detection range, sensitivity settings, false-trigger rates or detailed room-testing results. It is also not confirmed whether the switch will ship with Matter 1.6.1 or support its Groupcast cluster. The published feature list should not be read as a finalized specification.
Beta Tests and Certification Ahead
Inovelli’s next stated milestone is building 15 beta units and testing them from November through Dec. 20. Hardware and firmware work is underway, and the company is inviting community feedback through its forum and project updates. Interested users may be able to volunteer for beta testing, though the source does not state how participants will be selected.
After testing, the current schedule calls for certification, including Matter certification, between December and Feb. 1, 2027, followed by preparation for production. Inovelli is targeting mass production for March 20. Readers should treat those dates as provisional until the company provides a confirmed launch plan, final specifications and pricing.
Key Questions
What is Inovelli developing?
Inovelli is developing the VTM32-SN, a White Series Matter-over-Thread wall switch based on its Project Linus presence-sensing design.
What does the mmWave sensor do?
The planned 24 GHz radar sensor is intended to detect room occupancy, including smaller movements that conventional motion sensors may miss. Inovelli has not published detailed performance figures, and the design is not described as a people-tracking system.
When will the switch go on sale, and what will it cost?
No price or preorder date has been announced. Inovelli currently targets mass production for March 20, 2027, after planned beta testing and certification, but says project dates may change.
Will it support Matter 1.6.1 Groupcast?
That is not confirmed. Inovelli has worked on Matter binding and group binding in White Series beta firmware, but the project information does not say whether the VTM32-SN will use Matter 1.6.1’s Groupcast architecture.
Can customers take part in development?
Inovelli has opened parts of development to community feature requests and beta testing. The company says contributors whose ideas are adopted may receive credit and a free device; participation does not guarantee selection or a particular feature.
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