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Inovelli has started developing the VTM32-SN, a Matter-over-Thread White Series switch with built-in 24 GHz mmWave presence sensing. Hardware and firmware work are underway, with beta testing and certification planned before a targeted March 2027 production start. Features and dates may change, and the company has not announced pricing or a preorder date.
Inovelli has begun development of the VTM32-SN, a Matter-over-Thread White Series switch that adds built-in 24 GHz mmWave presence sensing. The project brings the company’s Project Linus presence-sensing design to its Matter lineup, but remains early: hardware and firmware work are underway, and product features and dates could change.
The new switch is intended to work in dimmer or on/off mode, following Inovelli’s existing Linus switches. The company’s current target feature set includes 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 Matter-over-Thread devices.
Planned hardware includes a center-rest paddle, configuration and favorite buttons, and a fully addressable RGB LED bar. Inovelli is investigating an integrated lux sensor, but has not confirmed it as a feature. The company has completed initial product requirements and research and development analysis; hardware design and firmware development are now underway, according to the project report.
Inovelli’s current schedule calls for 15 beta samples, with testing planned from November through Dec. 20. Certification, including Matter certification, is scheduled for December through Feb. 1, 2027, followed by production preparation. Mass production is currently targeted for March 20, 2027. Inovelli cautions that the schedule and feature set may change during development.
Presence Sensing Joins Matter Controls
The planned switch would add occupancy sensing to Inovelli’s Matter-over-Thread wall controls, potentially allowing lighting behavior to respond to whether a room is occupied. The value for users will depend on how well the sensing performs in real rooms and how the final product handles integrations and setup. Those outcomes are not yet established because development is ongoing.
Inovelli describes the Project Linus design as focused on reliable room occupancy, rather than detailed spatial mapping or tracking multiple people. That distinction matters: mmWave radar can register smaller movements than conventional passive infrared sensors, which may help detect someone who is sitting still. Radar can also trigger false detections in complex room settings, so tuning and testing will shape how useful it is in everyday use.
The switch could also extend the range of options for people using Inovelli’s Matter lineup. The company says its Blue Series Zigbee and Red Series Z-Wave lines already include Project Linus presence-sensing dimmers; the proposed model would bring that approach to the White Series. Its planned support for multi-way installations and operation without a neutral wire may also matter to buyers whose wiring or existing switch setup limits their choices, if those features make it into the released product.
Matter-over-Thread smart light switch
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From White Series to Project Linus
Inovelli’s White Series is its Matter-over-Thread counterpart to its established Zigbee Blue Series and Z-Wave Red Series. The lineup began with a 2-in-1 switch now sold as the White Series Smart Dimmer, which the source report describes as the company’s first Thread and Matter wall switch. Inovelli has since added an on/off switch with humidity sensing, a dedicated fan switch and a fan/light canopy module.
The proposed VTM32-SN would extend an existing design into the White Series. Inovelli has also been developing Matter binding, which allows compatible devices to control one another directly. Recent White Series beta firmware expanded that work with group binding, letting a switch target a Matter group instead of maintaining separate bindings to each light.
The report says Matter 1.6.1 includes a newer Groupcast cluster and updated access-control and group-key handling. It does not indicate that the VTM32-SN will ship with Matter 1.6.1 or support that cluster. Adopting it could offer a cleaner approach to controlling multiple Matter lights, but that remains a possibility rather than a confirmed product feature.
“The project is at an early stage, with features and dates subject to change.”
— Inovelli, as reported by Matter Alpha
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Features Still Under Development
No price or preorder date has been announced. The schedule is provisional, and the company has warned that both dates and features may change. The proposed lux sensor is still under investigation, and the report does not confirm whether it will be included.
It is also unclear whether the product will support Matter 1.6.1 Groupcast at launch. The report says there is no indication that it will use the newer cluster. While Inovelli’s existing work on binding may provide relevant context, it does not establish what this switch’s final software will support.
Real-world sensing performance remains to be tested. The source describes mmWave’s ability to detect smaller movements and notes the possibility of false detections, but provides no measurements for this switch. Its accuracy, range and behavior in different rooms are not yet known.
smart switch with occupancy detection
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Beta Tests and Certification Ahead
Inovelli’s next stated milestones are hardware and firmware development, followed by a planned batch of 15 beta samples for testing from November through Dec. 20. Certification, including Matter certification, is scheduled for December through Feb. 1, 2027. Production preparation is due afterward, with mass production currently targeted for March 20, 2027.
The company has opened parts of development to its community, including feature requests, beta testing and project updates. Inovelli says contributors whose ideas are used may receive credit and a free device. Readers can follow the project through the company forum; availability and pricing remain unannounced.
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Key Questions
What is Inovelli developing?
It has started development of the VTM32-SN, a White Series Matter-over-Thread switch with planned 24 GHz mmWave presence sensing.
When might the switch go into production?
Inovelli currently targets March 20, 2027 for mass production, after planned beta testing and certification. The schedule may change.
Has Inovelli announced a price or preorder date?
No. The source report says neither pricing nor a preorder date has been announced.
Will the switch support Matter 1.6.1 Groupcast?
That has not been confirmed. The report says there is no indication yet that the switch will ship with Matter 1.6.1 or support its Groupcast cluster.
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