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Shelly has announced the Presence Gen4, an $84.99 mmWave radar sensor that can track up to 10 people at once without using a camera. It is available through Shelly’s online store and supports several smart-home platforms and connection standards; retailer availability is expected later.
Shelly has announced the Presence Gen4, a smart-home sensor that uses mmWave radar to detect the presence and movement of up to 10 people at once without a camera. The device is priced at $84.99 through Shelly’s online store and is designed to trigger home automations based on where people are in a room.
The Presence Gen4 can sit on a shelf or table using its built-in stand, or be mounted on a wall. Shelly says its 140-degree horizontal field of view lets it monitor areas of up to 650 square feet. The sensor connects to power through a USB-C cable, so its placement depends on access to a suitable power source.
Users can configure as many as 10 separate detection zones, each with its own settings. For example, an automation could turn on a desk lamp when someone sits at a desk, rather than whenever anyone enters the room. Other possible triggers include lighting, heating, cooling or music when someone enters an area, and switching devices off after they leave.
Shelly says the sensor can detect people and pets, with sensitivity settings that can help exclude low-to-the-ground movement such as a robot vacuum. The company lists compatibility with Google Home, Apple Home, Amazon Alexa, Samsung SmartThings and Home Assistant, along with Wi-Fi, Bluetooth, Zigbee and Matter support.
Camera-Free Room Automations
The Presence Gen4 is aimed at households that want room-level automation without relying on a camera to identify occupancy. Radar-based presence detection can let smart-home routines respond to people remaining in a space, not just to a door opening or motion that quickly stops. That distinction may be useful for tasks such as keeping lights on while someone is seated or starting a device only when a particular area is occupied.
Its multiple configurable zones offer more targeted triggers than a single room-wide presence signal. At the same time, the device is not a standalone solution for every setup: it needs a power connection and requires compatible smart-home equipment or services to carry out the automations. Shelly’s stated coverage and detection capabilities are product specifications, not an independent assessment of performance in every room.
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Shelly’s Expanding Smart-Home Range
The announcement follows Shelly’s launch of a $50 security camera the previous month, according to The Verge’s report. The Presence Gen4 takes a different approach to sensing: it is intended to detect people, movement and activity using mmWave radar rather than video. That makes it a presence sensor for automation, rather than a camera for recording or viewing footage.
The product’s support for several major smart-home platforms and standards is intended to let it fit into different existing setups. The report says it was available from Shelly’s online store when announced, with sales through retailers such as Amazon and Best Buy expected later. No retailer launch date was specified.
“The sensor can detect up to 10 people simultaneously without a camera.”
— Shelly, as reported by The Verge
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Performance and Retail Timing
The report does not provide independent testing of how accurately the Presence Gen4 distinguishes people from pets or other movement, or how reliably it tracks multiple people in different room layouts. The stated 650-square-foot coverage and 10-person capacity are Shelly’s specifications; real-world results may depend on placement and the space being monitored, but the source does not detail those conditions.
It is also unclear when the sensor will reach Amazon, Best Buy or other retailers. The report does not provide information about warranty terms, software support duration, regional availability or whether every listed smart-home integration offers the same features.
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Retail Rollout and User Testing
Shelly’s online store is the confirmed sales channel in the report, while availability through Amazon and Best Buy was expected but not dated. Buyers will need to check Shelly’s store and retailer listings for current stock and regional availability.
Further details that would help evaluate the device include independent tests of its range and multi-person tracking, practical setup guidance for its detection zones, and confirmation of how its integrations work across different smart-home systems. Until those details are available, the announcement establishes the product’s advertised features and price, but not how consistently it performs in varied homes.
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Key Questions
What does the Shelly Presence Gen4 do?
It uses mmWave radar to detect people, movement and activity, and can send presence information to compatible smart-home systems for automations.
Does the Presence Gen4 use a camera?
No. Shelly’s sensor uses radar rather than a camera to detect people and pets; the product is not described as recording video.
How many people and detection zones can it handle?
Shelly says it can detect up to 10 people simultaneously and supports up to 10 independently customizable detection zones.
How much does it cost, and where is it available?
The reported price is $84.99, with availability through Shelly’s online store at the time of the announcement. Amazon and Best Buy availability was expected, but no date was given.
What smart-home systems does it support?
Shelly lists Google Home, Apple Home, Amazon Alexa, Samsung SmartThings and Home Assistant, as well as Wi-Fi, Bluetooth, Zigbee and Matter support.
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