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Inovelli has started hardware and firmware development on the VTM32-SN, a White Series Matter-over-Thread wall switch planned to include 24 GHz mmWave presence sensing. The project is in an early stage, and features, certification and production dates may change; price and preorder timing have not been announced.
Inovelli has started development of its White Series VTM32-SN, a Matter-over-Thread wall switch planned to add built-in 24 GHz mmWave presence sensing to the company’s Matter lineup. The project remains at an early stage: hardware design and firmware development are underway, and Inovelli says its planned features and schedule could change.
The VTM32-SN is intended to extend Project Linus, Inovelli’s presence-sensing switch design, from its existing Zigbee and Z-Wave product lines to the Matter-over-Thread White Series. According to the project details reported by Matter Alpha, Inovelli has completed initial product requirements and research and development analysis. The company is now working on the hardware and firmware.
The planned hardware includes a 24 GHz radar sensor, a center-rest paddle, a configuration and favorite button, and an addressable RGB LED bar. Inovelli is also investigating a built-in lux sensor; that feature is not confirmed. The switch is being designed to work in dimmer or on/off mode and is intended to support 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 targeting a design that works without a neutral wire, as its existing Matter dimmer does. The company plans to make 15 beta samples and test them from November through Dec. 20. Matter certification and other certification work are scheduled for December through Feb. 1, 2027, followed by production preparation. The current target for mass production is March 20, 2027. Those dates are development targets, not a confirmed retail release date.
Presence Sensing Joins Matter Controls
If the planned features reach production, the switch would add room-presence detection to Inovelli’s Matter-over-Thread controls, extending a capability already found in the company’s Zigbee Blue Series and Z-Wave Red Series. That could appeal to households seeking a wall control that can also help automate lighting based on whether a room is occupied, rather than relying only on motion detected during a brief pass through the space.
Radar sensing can pick up smaller movements than conventional passive infrared sensors, which may help keep lights on when a person is relatively still. It can also produce false occupancy detections, depending on room layout and conditions, so performance in real homes will matter. Inovelli’s stated approach is focused on detecting room occupancy, not detailed positioning or tracking multiple people.
The combination also puts two technically demanding functions in one device: radar sensing and Matter-over-Thread switching, with a no-neutral-wire design as a further target. For buyers, the announcement signals a product in development, not a finished or independently tested device. Price, availability and final specifications remain unannounced.
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From Linus to White Series
The White Series is Inovelli’s Matter-over-Thread product family, alongside its Zigbee Blue Series and Z-Wave Red Series. Its first wall switch was a 2-in-1 model now sold as the White Series Smart Dimmer. The company has since added an on/off switch with humidity sensing, a dedicated fan switch and a fan/light canopy module.
Project Linus already brings presence sensing to Inovelli’s Blue and Red product families. The planned VTM32-SN would carry that product concept into White Series while changing the connectivity platform to Matter over Thread. Inovelli has also been developing Matter binding, which lets compatible devices control one another directly. Recent White Series beta firmware has added group binding, allowing a switch to target a Matter group rather than requiring separate bindings to individual lights.
Matter 1.6.1 includes a newer Groupcast architecture in its official SDK. Matter Alpha reported no confirmation that the VTM32-SN will ship with Matter 1.6.1 or support its Groupcast cluster. Any use of that technology on this switch remains a possibility, not an announced feature.
“The company cautions that both features and dates can change as development progresses.”
— Inovelli, as described in the project information reported by Matter Alpha
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Features and Launch Dates May Shift
The VTM32-SN is still under development, so its final capabilities are not settled. Inovelli is investigating a lux sensor, but has not confirmed it will be included. The project information also does not establish whether the switch will support Matter 1.6.1 Groupcast, or provide final details on its radar tuning, Matter certification status or compatibility across smart-home platforms.
The schedule remains provisional. Beta testing is planned for November through Dec. 20, certification is scheduled for December through Feb. 1, 2027, and mass production is currently targeted for March 20. The source report gives no price, preorder date or confirmed retail availability. It also remains to be seen how effectively the sensor will distinguish actual occupancy from false detections in different home environments.
24 GHz radar room occupancy sensor
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Beta Testing and Certification Ahead
Inovelli’s next stated milestone is to build 15 beta units for testing from November through Dec. 20. The company is developing the product in public and has invited community members to submit feature ideas, follow project updates and volunteer for beta testing. The report says contributors whose suggestions are adopted may receive credit and a free device.
After beta testing, the current plan calls for certification work through Feb. 1, 2027, followed by production preparation and a March 20 mass-production target. Those stages could clarify the final feature set, certification and availability, but no retail launch date or price has been announced. Inovelli’s progress updates will be the next source of confirmation.
smart home wall switch with motion detection
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Key Questions
What is Inovelli developing?
Inovelli is developing the VTM32-SN, a White Series Matter-over-Thread wall switch planned to include built-in 24 GHz mmWave presence sensing.
What is mmWave presence sensing intended to do?
The sensor is intended to detect whether a room is occupied, including smaller movements that passive infrared sensors may miss. Inovelli’s stated focus is room occupancy, not detailed spatial or multi-person tracking.
When will the switch be available?
There is no confirmed retail availability date. Inovelli currently targets mass production for March 20, 2027, after planned beta testing and certification; the schedule may change.
Has Inovelli announced the price?
No. The source report says price and preorder timing have not been announced.
Will it support Matter 1.6.1 Groupcast?
That has not been confirmed. Matter 1.6.1 includes Groupcast, but the report says there is no indication yet that the VTM32-SN will ship with that version or support the cluster.
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