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Inovelli has started work on the VTM32-SN, a Matter-over-Thread White Series wall switch that is planned to include 24 GHz mmWave presence sensing. Hardware and firmware development are underway, but features and dates may change; the company has not announced a price or preorder date.
Inovelli has begun developing the VTM32-SN, a White Series wall switch that is planned to combine Matter over Thread with built-in 24 GHz mmWave presence sensing. The project would bring the company’s Project Linus presence-detection design to its Matter-enabled lineup, but the switch is still in development and its features and schedule may change.
Inovelli says it has completed the product’s initial requirements and research-and-development analysis, and that hardware design and firmware development are now underway. The company plans to produce 15 beta samples for testing from November through Dec. 20. Certification, including Matter certification, is scheduled for December through Feb. 1, 2027, with mass production currently targeted for March 20, 2027. These are development targets, not confirmed retail dates.
The planned switch is based on Inovelli’s existing Project Linus designs, which are available in its Zigbee and Z-Wave product lines. The VTM32-SN is intended to work in either dimmer or on/off mode. Its current target feature list 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 a design that can operate without a neutral wire, a more technically demanding approach for a Matter-over-Thread device.
Inovelli’s current hardware plans include a center-rest paddle, a configuration and favorite button, an addressable RGB LED bar and the built-in 24 GHz radar sensor. The company is also investigating an integrated light-level, or lux, sensor; that feature is not confirmed. Inovelli has opened development to community input, including feature requests and beta testing, and says it will post project updates as work progresses.
Presence Sensing Joins White Series
The project could close a gap between Inovelli’s Matter lineup and its other switch platforms. The company’s Blue Series Zigbee and Red Series Z-Wave lines already include Project Linus presence-sensing dimmers, while White Series products have focused mainly on controlling lights and fans. A Matter-over-Thread version would give customers another option for automating lighting based on whether a room is occupied.
Inovelli’s planned use of mmWave radar is intended to detect small movements and help a switch keep lights on when someone is relatively still. That differs from conventional passive infrared sensing, which can miss occupancy when movement is limited. Radar performance also depends on the room and how the sensor is tuned: the source report notes that false detections can occur in complex settings. Inovelli’s stated aim for this wall switch is reliable room occupancy, not detailed spatial or multi-person tracking.
The switch may also be relevant to people who want to control Matter-compatible lighting directly from a wall control. Inovelli has been working on Matter binding, which lets devices control one another, and recent White Series beta firmware has added group binding. However, no source material confirms that the VTM32-SN will support a newer Matter Groupcast implementation, so that potential capability should not be treated as part of the announced feature set.
Matter-over-Thread smart light switch
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How It Fits Inovelli’s Matter Lineup
Inovelli’s White Series is its Matter-over-Thread counterpart to the 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. Inovelli has since added an on/off switch with humidity sensing, a dedicated fan switch and a fan/light canopy module. The planned VTM32-SN would add presence detection to that range.
The new model extends Project Linus rather than introducing a wholly separate product concept. Its planned dual dimmer and on/off operation follows the existing Smart Dimmer approach, while Matter over Thread would place the device within Inovelli’s newer connectivity lineup. The source report identifies the product as early-stage and says the company has posted its initial requirements while inviting community participation.
Inovelli’s binding work is a separate, related development. Its beta firmware has expanded device-to-device control with group binding, allowing a switch to address a Matter group instead of creating individual bindings to each light. Matter 1.6.1 includes a newer Groupcast architecture in its official SDK, but the available information does not establish that the VTM32-SN will ship with that version or support Groupcast.
“The company has completed the initial product requirements and R&D analysis, with hardware design and firmware development now underway.”
— Inovelli’s project materials, as summarized by Matter Alpha
Features And Dates May Change
The VTM32-SN is at an early stage, and Inovelli cautions that planned features and dates can change during development. The company has not announced a price, preorder date or retail availability date. The March 20, 2027 mass-production target does not establish when consumers will be able to buy the switch.
The final behavior and performance of the 24 GHz mmWave sensor have not been demonstrated in the information provided. It is also unclear whether the optional lux sensor will make the final design, which Matter version the product will ship with, or whether it will support Matter 1.6.1 Groupcast. Group binding and newer Groupcast support should not be conflated: the former is described in existing beta firmware, while the latter is only a possible future direction for this product.
Beta Tests And Certification Ahead
Inovelli’s stated schedule calls for 15 beta units to be tested from November through Dec. 20, followed by certification work scheduled from December through Feb. 1, 2027. Production preparation would follow, with mass production currently targeted for March 20, 2027. The company has not provided a preorder date or price.
In the meantime, Inovelli is inviting community members to submit ideas through its forum, follow project updates and volunteer for beta testing. The company says contributors whose ideas are incorporated may receive credit and a free device. Further project updates should clarify which planned features make the final specification and whether the schedule holds.
Key Questions
What is Inovelli developing?
Inovelli is developing the VTM32-SN, a White Series wall switch planned to use Matter over Thread and include built-in 24 GHz mmWave presence sensing. It is an extension of the company’s Project Linus design.
What could the presence sensor do?
The mmWave sensor is intended to detect small movements and help determine whether a room remains occupied, including when someone is relatively still. Inovelli’s stated focus is room occupancy, not detailed tracking of people or their positions. Performance and final tuning have not yet been confirmed.
When will the switch be available, and how much will it cost?
No price, preorder date or retail availability date has been announced. Inovelli’s current development plan targets mass production for March 20, 2027, but that is a target, not a confirmed consumer launch date.
Will it support Matter 1.6.1 Groupcast?
That has not been confirmed. Inovelli has been developing Matter binding and group binding for White Series beta firmware, but the available information does not say whether the VTM32-SN will ship with Matter 1.6.1 or support its Groupcast cluster.
Is the lux sensor part of the confirmed specification?
No. Inovelli is investigating an integrated lux sensor, but it has not confirmed that the feature will be included in the finished switch.
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