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Shelly has released the Presence Gen4, its first mmWave radar presence sensor, in North America for a suggested retail price of $84.99. The company says it can track up to 10 people across 10 customizable zones and supports Matter, local control and smart-home automations; independent performance testing is not included in the source report.
Shelly has released its first mmWave presence sensor, the Presence Gen4, in North America, advertising detection of up to 10 people across 10 customizable zones. The $84.99 device supports Matter and local control, positioning it as a way to trigger smart-home actions based on where people are in a room rather than only whether motion occurs.
The Presence Gen4 uses millimeter-wave radar to detect presence and movement, including small movements when someone is otherwise still, according to the product information reported by Matter Alpha. In Shelly’s app, users can view occupancy by defined space. The device is intended to support automations such as switching lights or climate controls on when someone enters a zone and responding when that area becomes empty.
Shelly lists a 140-degree horizontal field of view when the sensor is wall-mounted, with coverage of up to 650 square feet. Corner placement narrows the field to 90 degrees and is listed for coverage of up to 525 square feet. The sensor measures 64 by 41 by 26 millimeters without its stand; the stand increases its dimensions, and the unit needs to be positioned within reach of its USB-C power supply.
The device includes Wi-Fi, Bluetooth and Zigbee, alongside Matter support. The report says it can work with platforms including Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant. Shelly also lists local control and custom scripting. Its suggested retail price is $84.99, and the report says it is available through Shelly’s US store, with Amazon availability also mentioned.
Zone-Based Presence for Smart Homes
Presence sensing can make automations respond to whether a person is actually in a space, rather than relying on a motion sensor that may stop registering someone who sits still. If the Gen4 performs as described, its multi-zone detection could let users set different actions for different parts of a larger room—for example, controlling lighting or heating based on occupancy in a particular area.
Matter support may also make the sensor easier to use alongside devices from different smart-home brands. The advertised local-control option is relevant for people who prefer automations that do not depend on cloud services, although the source material does not detail which features work locally or how setup varies across platforms. The price and stated capabilities place it among the options for people seeking more detailed occupancy data than a basic motion sensor provides.
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Shelly’s Move Into Radar Sensing
The Presence Gen4 is described as Shelly’s first mmWave radar sensor. Unlike a conventional motion detector that reacts to movement, radar-based presence sensors are designed to keep detecting a person who remains relatively still. That distinction can matter for room automations, where a motion sensor may turn lights off after someone has stopped moving.
The Gen4 combines that sensing approach with customizable zones and height settings. The report says users can set minimum and maximum detection heights to include or filter out pets, robot cleaners and other small objects. A built-in light sensor can also detect changes in lighting. These are product capabilities described in the source report; it does not provide comparative test results against other sensors.
“Accurate presence detection unlocks the kind of smart home experience customers have long dreamed about, where everything from lighting to HVAC respond automatically without needing to lift a finger.”
— Matt Brown, CMO of Shelly USA, as quoted by Matter Alpha
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Performance Details Still Unverified
The source report describes the Gen4’s advertised capacity, coverage and integrations but does not provide independent testing showing how reliably it tracks 10 people in 10 zones under different room layouts or conditions. It is also unclear how the quoted coverage figures change with furniture, walls, sensor height or placement beyond the stated wall and corner positions.
The report does not specify which functions remain available without an internet connection, what data the app stores, or whether every listed smart-home platform supports every feature. It also gives no confirmed timeline for broader retail availability beyond the reported US availability. Buyers may need to check Shelly’s current product and platform documentation for those details.
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Availability and Real-World Testing
The Presence Gen4 is listed as available now in North America for a suggested retail price of $84.99. The source report points readers to Shelly’s US store and mentions Amazon, but does not give a separate launch date or detailed stock information for each retailer.
The next useful evidence will be hands-on testing of zone accuracy, multi-person tracking, setup and platform compatibility in typical homes. Those results could clarify how the advertised capabilities translate into everyday automations and how much adjustment is needed to distinguish people from pets or small devices.
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Key Questions
What is the Shelly Presence Gen4?
It is Shelly’s first mmWave radar presence sensor, designed to detect people in a room and trigger smart-home automations based on occupancy.
How many people and zones can it track?
Shelly’s product information, as reported by Matter Alpha, says the sensor can detect up to 10 people across 10 customizable zones. The source does not provide independent test results for that capacity.
Does the Presence Gen4 work with Matter?
Yes. The report says it supports Matter and lists compatibility with Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant. Specific functions may vary by platform.
How much does it cost?
The reported suggested retail price is $84.99. The source says it is available through Shelly’s US store and mentions Amazon availability.
Can it detect pets?
The report says users can adjust minimum and maximum detection heights to filter out or include pets and small objects such as robot cleaners. It does not provide test data on detection accuracy.
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