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Shelly has launched the Presence Gen4, its first mmWave radar presence sensor, in North America. It is designed to track up to 10 people across 10 customizable zones, works with Matter-compatible smart home platforms, and offers local control; independent performance testing details were not provided in the source report.
Shelly has released the Presence Gen4, its first mmWave radar presence sensor, in North America. The company says the device can detect up to 10 people across 10 customizable zones and supports Matter, giving smart-home users another way to trigger automations based on where people are rather than only whether a room has seen movement.
The Presence Gen4 uses mmWave radar to detect people and small movements, including when someone is sitting still. According to Matter Alpha’s report, users can view occupancy by defined area in the Shelly app and set actions to respond when someone enters or leaves a zone. Potential uses include controlling lights, heating and cooling, curtains, and entertainment systems.
Shelly lists a 140-degree horizontal field of view and coverage of up to 650 square feet for wall mounting. The report says corner placement narrows the field to 90 degrees and covers up to 525 square feet. The sensor measures 64 by 41 by 26 millimeters without its stand, and uses a USB-C cable for power.
The device includes Wi-Fi, Bluetooth, and Zigbee, alongside Matter support. The report identifies compatibility with Google Home, Amazon Alexa, Apple Home, Samsung SmartThings, and Home Assistant. It also describes local control and custom scripting options. The stated retail price is $84.99, with availability through Shelly’s US website and Amazon reported by the source.
More Precise Room-Based Automations
Presence sensing can address a limitation of conventional motion sensors: a person who remains still may no longer trigger them. Shelly says the Gen4 can detect micro-movements and map occupancy to separate zones, potentially allowing an automation to respond to a person in one part of a room without treating the entire space as occupied.
That could make lighting and climate controls more responsive, and could help turn devices off when areas are empty. The sensor’s multi-zone, multi-person approach may be relevant in open-plan rooms where a single motion trigger offers little information about where someone is. These are potential applications, however; the source report does not provide independent measurements of accuracy, reliability, or energy savings.
Its Matter support and local-control option may also appeal to households trying to connect equipment across different smart-home systems or reduce reliance on cloud services. Matter support does not by itself establish that every feature works identically across every platform, so users may need to check platform and integration details for their setup.
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Shelly Enters Radar Presence Sensing
The Presence Gen4 is Shelly’s first mmWave sensor, according to the report. Unlike a basic motion detector, which typically reacts to movement, mmWave radar is intended to register presence through very small movements. That makes it suited to automations that should continue while a person is reading, working, or otherwise staying relatively still.
The Gen4’s customizable zones provide a way to divide the sensor’s coverage area for automation rules. Its reported height settings can also be used to include or filter out pets, robot cleaners, and other smaller objects. A built-in light sensor can detect changes in ambient lighting. The report describes these as adjustable features, but does not document how they perform in specific room layouts or against different kinds of interference.
“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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Real-World Accuracy Still Unreported
The source report describes the sensor’s specifications and planned uses but does not include independent testing of its claimed ability to detect 10 people across 10 zones. It is not clear how performance varies with room shape, furniture, walls, movement, or competing radar sources, or how consistently the device distinguishes people from pets and robot cleaners.
The report also does not specify whether all detection, zone, and scripting features are available through every Matter-compatible platform, or whether some require the Shelly app or a particular integration. Its stated coverage figures should be treated as manufacturer or report specifications rather than a guarantee for every installation. The source gives a price and says it is available now, but does not establish stock levels or delivery timing.
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Availability and Compatibility Checks
The Presence Gen4 is listed at $84.99 and is reported available through Shelly’s US website and Amazon. Prospective buyers will need to check current retailer listings for stock, shipping, and any changes to the listed price.
Further hands-on testing and platform-specific documentation could clarify how well the device tracks multiple occupants, how its zones behave in everyday homes, and which features work through each Matter integration. Until those details are available, the confirmed development is the product’s North American release and its stated capabilities—not independently established performance across different homes.
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Key Questions
What is the Shelly Presence Gen4?
It is Shelly’s first mmWave radar presence sensor. The device is designed to detect occupancy and support smart-home automations based on presence.
How many people and zones can it track?
Shelly’s stated capability, as reported by Matter Alpha, is up to 10 people across 10 customizable zones. The source does not include independent testing of that performance.
Does the Presence Gen4 work with Matter?
Yes. The report says it supports Matter and names Google Home, Amazon Alexa, Apple Home, Samsung SmartThings, and Home Assistant among compatible systems. Feature availability may differ by platform and setup.
Can it detect someone who is sitting still?
The report says its mmWave radar can detect micro-movements, allowing it to register presence when someone is not moving around. It does not provide independent accuracy results.
How much does it cost?
The reported retail price is $84.99. The source says it is available through Shelly’s US website and Amazon; buyers should check those listings for current price and stock.
Source: rss
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