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Shelly has released the Presence Gen4, its first mmWave radar presence sensor, in North America for a recommended price of $84.99. It is designed to track up to 10 people across 10 configurable zones and supports Matter, local control and smart-home automations; independent performance testing is not included in the report.
Shelly has released its first mmWave presence sensor, the Presence Gen4, in North America, adding a Matter-compatible device that the company says can track up to 10 people across 10 customizable zones. The sensor is priced at $84.99 and is designed to trigger home automations based on where people are, rather than relying only on movement.
The Presence Gen4 uses millimeter-wave radar to detect people, including small movements when someone is still. According to the product report, users can define as many as 10 zones and view occupancy by area in the Shelly app. The device is also described as supporting height-based detection settings, which can be adjusted to include or filter out pets and smaller objects such as robot cleaners.
Shelly says the sensor can connect to smart-home systems through Matter, alongside Wi-Fi, Bluetooth and Zigbee radios. The report names Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant among the compatible platforms. It also says the device supports local control and custom scripting, allowing some smart-home functions to run without cloud access.
The unit measures 64 by 41 by 26 millimeters without its stand and is powered over USB-C. Shelly’s reported coverage figures are up to 650 square feet with a 140-degree horizontal field when wall-mounted, or up to 525 square feet with a 90-degree field in a corner position. The sensor also has a built-in light sensor. The report lists the $84.99 recommended retail price and says it is available through Shelly’s U.S. website.
Zone Detection for Home Automation
The key difference from a basic motion detector is the intended use of ongoing presence detection. A motion sensor can stop registering a person who remains still; mmWave radar is designed to continue detecting subtle movement. In practice, that could let automations keep lights on while someone reads or adjust heating and cooling according to which part of a room is occupied.
Tracking occupancy by zone may also give users more control than a single room-level trigger. For example, a system could respond differently when someone enters a work area or leaves a living space. These are possible uses, not confirmed outcomes: the source describes the device’s features and capabilities but does not provide independent testing of accuracy, response time or performance in different room layouts.
The emphasis on local control may appeal to buyers who want occupancy data and automations to work without depending entirely on a cloud service. That does not, by itself, establish how all data is stored or processed. Buyers concerned about privacy should check Shelly’s product documentation and settings before installation.
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Shelly Enters Radar Presence Sensing
The Presence Gen4 marks Shelly’s entry into mmWave presence sensing, according to the supplied report. The technology uses radar waves in the millimeter range to detect a person’s presence and small movements. Unlike a camera, this kind of sensor reports occupancy rather than providing video, though the report does not detail what data the device records or retains.
Shelly positions the product for more than lighting. Its listed automation possibilities include climate controls, shades, curtains and entertainment systems, triggered by entry into or departure from defined zones. Matter support is intended to help the device work across compatible smart-home platforms, while the built-in radios provide additional connection options. The stated compatibility list comes from the report; it does not specify whether every feature works identically across each platform.
Performance Details Still Unverified
The source report describes Shelly’s stated capacity and coverage, but does not include independent tests confirming how reliably the sensor identifies 10 people at once or separates occupancy across 10 zones. It also gives no measured results for false detections, latency, or performance around walls, furniture and other sources of interference.
Further details are not provided on the device’s data handling, whether all functions remain available during an internet outage, or which features are exposed through each Matter-compatible platform. The report says the product is available through Shelly’s U.S. website, but does not establish shipping timelines or availability outside North America.
Availability and Compatibility Checks
The Presence Gen4 is listed as available now in North America at a recommended retail price of $84.99. Prospective buyers will need to check Shelly’s store for current stock, shipping terms and any later listings through other retailers; the source report mentions Amazon availability but does not give a confirmed date or purchasing link.
For users considering the sensor, the next practical steps are to confirm compatibility with their chosen Matter platform, review which features that platform supports and check whether the intended mounting position is within the stated coverage. Independent reviews or hands-on testing may provide more evidence about accuracy and reliability as the device reaches customers.
Key Questions
What is the Shelly Presence Gen4?
It is Shelly’s first mmWave radar presence sensor, designed to detect people and support home automations based on occupancy.
How many people and zones can it track?
Shelly says it can detect up to 10 people across up to 10 customizable zones. The supplied report does not include independent test results for that capacity.
Does the Presence Gen4 work with Matter?
Yes. The report says the device supports Matter and names Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant as compatible systems. Feature support may vary by platform.
How much does it cost, and where is it available?
The reported recommended retail price is $84.99. The source says it is available now through Shelly’s U.S. website, with North America identified as the launch market.
Can it detect people who are sitting still?
The report says mmWave radar can detect micro-movements when someone is motionless, unlike motion-triggered sensing that depends on larger movement. Independent performance measurements were not provided.
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