# Shelly's radar sensor tracks 10 people without cameras

> Shelly's new Presence Gen4 uses radar instead of cameras to detect multiple people moving through spaces and trigger smart home automations.
- Title: Shelly's radar sensor tracks 10 people without cameras
- Summary: Shelly's new Presence Gen4 uses radar instead of cameras to detect multiple people moving through spaces and trigger smart home automations. Shelly released…
- Keywords: shelly, presence gen4, mmwave radar, smart home, motion detection, home automation, technology, culture, Shelly's, radar, sensor, tracks
- Source: The Verge — https://theverge.com/tech/1011967/shellys-new-presence-sensor-simultaneously-detects-up-to-ten-people-without-a-camera
- Author: Andrew Liszewski
- Published: 2026-10-15T15:00:00+00:00
- Read time: 1 min
- Topics: shelly, presence gen4, mmwave radar, smart home, motion detection, home automation, technology, culture
## Shelly launches radar presence sensor
Shelly announced the Presence Gen4 sensor today, which uses mmWave radar technology to detect people and pets without recording video for smart home automation.
## Detects up to 10 people in 650 square feet
The Presence Gen4 can monitor spaces up to six hundred fifty square feet with a one hundred forty degree horizontal field of view, detecting up to ten people simultaneously.
## Price and smart home compatibility
Available starting today for eighty four dollars ninety nine cents through Shelly's online store, the Presence Gen4 integrates with Google Home, Apple Home, Amazon Alexa, Samsung SmartThings, and Home Assistant.
## Customizable zones trigger automations
You can set up to ten independently customizable detection zones to trigger automations like lights, heating, cooling, or music when people enter or leave spaces, conserving power when rooms are empty.
## Sensitivity adjustments for pets and robots
The sensor can include small objects like pets when detected or adjust sensitivity to ignore low ground objects, ensuring automations aren't triggered by robovacs tidying your floor.
## Key takeaway

Shelly released the Presence Gen4, a ninety-four dollar ninety-nine cent radar sensor that detects up to ten people simultaneously without recording video, integrating with major smart home systems.