Shelly's New Presence Sensor Detects Up to Ten People at Once Without a Camera
Following the launch of its $50 subscription-free security camera last month, Shelly today unveiled another new smart home automation accessory that can track multiple people as they move through rooms or large spaces without recording them. The Shelly Presence Gen4 sensor uses mmWave radar technology instead of a camera to detect […]
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The Presence Gen4 sensor uses mmWave radar to detect and trigger smart home automation as people move around the home.
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is a senior reporter covering and reviewing the latest gadgets and technology since 2006, but has loved all things electronic since childhood.
After launching its $50 subscription-free security camera last month, Shelley today announced another new smart home automation accessory that can track multiple people as they move through rooms or large spaces without recording them. The Shelly Presence Gen4 sensor uses mmWave radar technology instead of a camera to detect the presence, movement and activity of people and pets. It's available starting today for $84.99 via Shelly's online store and is expected to be available soon at other retailers such as Amazon and Best Buy.
Presence Gen4 can be placed on a shelf or desk using its built-in stand, or permanently mounted on a wall to take full advantage of its 140-degree horizontal field of view, allowing it to monitor spaces up to 650 square feet. Installation requires access to a power source for the sensor's USB-C cable, but the Presence Gen 4 is easy to do. It is integrated into several smart home systems, including Google Home, Apple Home, Amazon Alexa, Samsung SmartThings, and Home Assistant, with support for Wi-Fi, Bluetooth, Zigbee, and Matter.
Mounting the Presence Gen4 to a wall allows the sensor to detect a larger space, but installation requires a USB-C power cable. Image: Shelly
Automations for turning on lights, heating, cooling or even music can be activated when someone enters the space and turned off again after leaving to save electricity. You can set up to ten independently adjustable detection zones so that, for example, a light bulb turns on when someone actually sits at the table, or your home theater turns on when someone flops down on the living room sofa. You can also add small objects such as pets during detection, or set Presence Gen4's sensitivity to ignore objects that are on the ground, ensuring automations don't trigger while cleaning the ground.
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