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Shelly has released its first mmWave presence sensor, the Presence Gen4, in North America for $84.99. The company says it can track up to 10 people across 10 customizable zones and supports Matter, with local-control options; independent performance testing was not provided in the source report.
Shelly has released the Presence Gen4, its first mmWave presence sensor, in North America, offering detection for up to 10 people across 10 customizable zones. The $84.99 device supports Matter and local control, positioning it as an option for smart-home automations that respond to where people are without relying on a camera.
The sensor uses mmWave radar to detect people’s presence and location, including small movements when someone is still. According to the product information reported by Matter Alpha, users can define up to 10 zones in the app and set automations to respond as someone enters or leaves an area. The device also has a light sensor and configurable minimum and maximum detection heights, which can help users include or filter out pets and smaller objects.
Shelly lists a 140-degree horizontal field of view and coverage of up to 650 square feet when wall-mounted. Corner placement narrows the stated field to 90 degrees and coverage to up to 525 square feet. The compact unit measures 64 by 41 by 26 millimeters, or 73 by 41 by 37 millimeters with its stand. It is powered by USB-C, so its position depends in part on access to a power source.
The Presence Gen4 includes Wi-Fi, Bluetooth and Zigbee radios, alongside Matter support. The report lists compatibility with Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant, as well as other Matter-compatible systems. Shelly also supports local control and custom scripting. The device is available now through Shelly’s U.S. store at a recommended retail price of $84.99; the source report also mentions Amazon availability, though it does not give a launch date there.
Zone Detection for Home Automations
The main practical difference from a basic motion sensor is that the Gen4 is designed to report continued presence and location, rather than only a movement trigger. That could let a household turn lights on in the occupied part of a room, adjust climate settings around where people are, or switch systems off after an area is empty. These are potential uses, not guarantees of performance in every home.
Ten configurable zones may be useful in large rooms or open-plan spaces, where a single occupancy signal can be too broad for targeted automation. Matter support also gives the sensor a route into several smart-home platforms, while local control can appeal to users seeking to reduce reliance on cloud services. The report describes local operation as an available option but does not detail which functions work without an internet connection.
The product is not a video-monitoring system: its reported occupancy interface shows presence by defined space. That may suit people who want room-level automation without installing a camera, although radar-based occupancy information can still reveal patterns of activity. Users should check the device’s data and network settings for their own privacy requirements.
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Shelly Enters mmWave Sensing
The Presence Gen4 is Shelly’s first mmWave radar sensor, according to the source report. It joins a smart-home market where presence sensors can trigger lighting and other devices, while Matter is intended to make compatible products work across different ecosystems. The product combines that connectivity with zone configuration and local-control features.
MmWave refers to radar operating at wavelengths of roughly 1 to 10 millimeters, or frequencies of 30 to 300 gigahertz, as described in the report. Unlike a conventional motion sensor that commonly reacts to movement, the Gen4 is described as detecting micro-movements to maintain a presence signal. Its performance can depend on placement, room layout and settings; the source material does not provide a controlled comparison 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
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Performance Claims Need Testing
The launch information describes a capacity of 10 people and 10 zones, but does not explain how detection accuracy changes with room size, walls, furniture, multiple people moving together or overlapping zones. No independent test results, error rates or comparison with competing products are provided in the source material. The headline phrase that the sensor “works” should not be read as a published test verdict.
It is also not clear which features remain available when the device is used entirely locally, how occupancy data is stored or transmitted, or whether all listed platform integrations provide the same controls. The report does not specify a date for Amazon availability, regional expansion beyond North America, or whether software updates will change supported functions.
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Availability and User Testing
For now, the confirmed next step for buyers in North America is that the Presence Gen4 is on sale through Shelly’s U.S. online store for $84.99. The source report also points to Amazon as a sales channel but gives no timing or listing details. Buyers will need to check retailer listings and product documentation for current availability and platform-specific setup instructions.
Real-world reviews and further product details will help establish how reliably the sensor separates people, pets and small objects, and how well its zone tracking works across different room layouts. Until those results are available, Shelly’s stated detection capacity and coverage figures remain the company’s specifications rather than independently verified outcomes.
multi-zone occupancy detection sensor
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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 support location-based smart-home automations.
How many people and zones can it track?
Shelly’s reported specification is up to 10 people across 10 customizable zones. Independent accuracy testing was not included in the source report.
Does the Presence Gen4 support Matter?
Yes. The device supports Matter and the report names Google Home, Amazon Alexa, Apple Home, Samsung SmartThings and Home Assistant among compatible systems. Actual controls can vary by platform.
How much does it cost, and where is it available?
The reported recommended retail price is $84.99, and it is available through Shelly’s U.S. online store. The source also mentions Amazon but does not specify its availability date.
Does it use a camera or require cloud control?
The report describes radar-based detection rather than video monitoring and says local control is supported. It does not explain the full scope of offline functions or data handling, so users should consult Shelly’s documentation for those details.
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