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Shelly has launched the Presence Gen4, its first mmWave radar sensor, in North America for a suggested retail price of $84.99. The company says it can detect up to 10 people across 10 customizable zones and supports Matter, local control and integrations with major smart-home platforms.
Smart-home company Shelly has released its first mmWave radar presence sensor, the Presence Gen4, in North America. The device is designed to detect up to 10 people across 10 customizable zones, allowing compatible smart-home systems to trigger automations based on where people are, with Matter support and a local-control option.
The Presence Gen4 uses mmWave radar to detect presence, including small movements that may not trigger a conventional motion sensor. According to the product report, users can view occupancy by defined area in Shelly’s app and configure the sensor to respond when someone enters or leaves a zone. The sensor can also be set to account for minimum and maximum height, which may help users include or filter out pets and small moving objects.
Shelly lists a 140-degree horizontal field of view when the sensor is wall-mounted, with coverage of up to 650 square feet. Corner mounting narrows the field to 90 degrees and is listed for up to 525 square feet. The unit measures 64 by 41 by 26 millimeters without its stand; the stand increases its dimensions, and the sensor requires a nearby power source for its USB-C cable.
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 supports local control and custom scripting. The listed recommended retail price is $84.99, and the source report says it is available through Shelly’s U.S. website and Amazon.
Zone-Based Control Without Cameras
The main difference from basic motion-triggered automation is that the sensor is intended to identify continued presence and location, not just movement across a detection area. That could let a household switch lights or climate settings based on which part of a room is occupied, or reduce energy use after an area becomes empty. The product report also describes possible integrations with shades, curtains and entertainment equipment, though the specific automations depend on a user’s setup.
The local-control option may appeal to buyers who want automations to work without sending presence data to a cloud service. The source report characterizes that as a privacy and network-resilience benefit; it does not provide independent testing of the device’s privacy practices or performance during an internet outage. Matter support may also make the sensor easier to connect to different smart-home ecosystems, but platform features can vary.
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Shelly Adds Radar to Its Lineup
The Presence Gen4 is Shelly’s first mmWave sensor, according to the source report. The company is known for smart-home automation products, and this launch adds a radar-based option for presence-triggered controls. Unlike a typical motion sensor, mmWave systems can detect subtle movement while a person remains in one place. That capability is the basis for the product’s claim to detect people who are present but relatively still.
The sensor’s 10-zone and 10-person figures describe its stated maximum capacity, not a guarantee that it will identify individuals or deliver the same results in every room. Its performance will depend on placement and configuration. The source report describes it as suitable for larger rooms and open-plan areas, with a built-in stand intended to help position the unit.
“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
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Real-World Detection Still Needs Testing
The supplied report gives product specifications and Shelly’s description of its capabilities, but it does not include independent accuracy tests, measured false-positive rates or comparisons with competing sensors. It is also not clear how reliably the device separates multiple people in different zones under varied room layouts, or how walls, furniture and sensor placement affect detection.
The report does not spell out which functions work locally, whether any features require a Shelly account, or how data is stored and handled. It also does not give a firm date for wider availability beyond the reported North American release. These details matter to buyers weighing privacy, platform compatibility and performance in a particular home.
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Availability and Independent Reviews
The Presence Gen4 is reported to be available now in North America for a recommended price of $84.99 through Shelly’s U.S. store and Amazon. Buyers can check current stock and platform requirements with the retailer and Shelly, as availability may change.
The next useful evidence will come from hands-on testing of detection accuracy, zone setup and local operation in real homes. Further information from Shelly about data handling, ecosystem-specific features and availability in other markets would also help clarify how the sensor compares with alternatives.
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Key Questions
How many people and zones can the Shelly Presence Gen4 detect?
Shelly’s product information, as summarized in the source report, says it can detect up to 10 people across up to 10 customizable zones. The report does not provide independent test results for those limits.
Does the Shelly Presence Gen4 support Matter?
Yes. The source report says the sensor supports Matter, along with Wi-Fi, Bluetooth and Zigbee. It lists Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant among compatible platforms, though available features may differ by setup.
How much does the Presence Gen4 cost?
The reported recommended retail price is $84.99. The source says it is available through Shelly’s U.S. website and Amazon; check those sellers for current pricing and stock.
Can it detect someone who is sitting still?
MmWave radar can detect subtle movement, and the report says the Presence Gen4 is designed to detect micro-movements even when people are motionless. Its performance in a particular room has not been independently established in the supplied material.
Does the sensor require cloud access?
The report says the Presence Gen4 offers a cloud-free local-control option. It does not clarify which functions are available locally or provide details about data storage and account requirements.
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