# Meross MS600 Smart Presence Sensor

Meross MS600 is a practical Matter presence sensor when you can give it constant power and want room occupancy over Wi-Fi instead of Thread. Buy it for a fixed room automation, not for a discreet battery sensor or a way to strengthen a Thread mesh.

Canonical page: https://matterhome.io/devices/meross-ms600-presence-sensor
Markdown page: https://matterhome.io/devices/meross-ms600-presence-sensor.md
Author: Matterhome Editorial Team
Author profile: https://matterhome.io/authors/matterhome-editorial-team
Edited and fact-checked by: JC Martinez
Editor profile: https://matterhome.io/authors/jc-martinez

## Device Facts

- Brand: Meross
- Model: MS600 Smart Presence Sensor
- Product type: Matter-over-Wi-Fi Presence Sensor
- Category: Sensors
- Connection: Matter over Wi-Fi
- Matter status: Meross sells MS600 as a Matter smart presence sensor that sets up on 2.4 GHz Wi-Fi and exposes presence plus light sensing through Matter.
- Launch date: 2024
- Thread border router required: No
- Brand hub required: No
- Typical price range: $33-$41
- Review status: Compatibility guide
- Product image: https://matterhome.io/content-assets/devices/meross-ms600-presence-sensor/product.webp
- Product image alt text: Meross MS600 Smart Presence Sensor
- Product image source: https://shop.meross.com/cdn/shop/files/Untitleddesign_53c9fd08-ba88-482b-9330-a621eb904039.png?v=1762133172&width=1000

## Ecosystem Support

- Apple Home: Supported
- Google Home: Supported
- Alexa: Supported
- SmartThings: Limited
- Home Assistant: Limited

## Best For

- Rooms where lights turn off while someone is sitting still
- Buyers who want Matter presence sensing without a Thread border router
- Fixed wall or shelf placements near an outlet

## Skip If

- You need a battery-powered sensor
- You want Thread instead of another Wi-Fi device
- The best sensing position has no nearby outlet

## Setup Notes

- Configure it on a 2.4 GHz Wi-Fi network before pairing through Matter.
- Plan for the 1.5 m power cable and outlet location before choosing a mounting spot.
- Test presence timing, light readings, and false triggers before using permanent adhesive.

## Known Limitations

- Presence detection is placement-sensitive and can be affected by room layout, fans, pets, and moving objects.
- SmartThings and Home Assistant behavior should be checked with the user's Matter setup because Meross highlights HomeKit, Alexa, and Google Home on the product page.
- The wired design is harder to hide than battery Thread sensors.

## Pros

- Direct Matter-over-Wi-Fi presence sensing
- Combines PIR, millimeter-wave radar, and light sensing
- No Thread border router or Meross hub required
- Adjustable mount and pet-proof shield are included

## Cons

- Requires continuous wired power
- Uses 2.4 GHz Wi-Fi instead of Thread
- Deeper tuning and platform behavior should be verified before buying several

## Sources

- https://shop.meross.com/products/smart-presence-sensor-ms600
- https://www.theverge.com/news/823265/meross-matter-thread-smart-presence-sensor-ms605-radar-mmwave
- https://shop.meross.com/cdn/shop/files/Untitleddesign_53c9fd08-ba88-482b-9330-a621eb904039.png?v=1762133172&width=1000

## The cable is the first decision

Meross MS600 is for rooms where ordinary motion sensing is not enough. It combines PIR motion sensing with millimeter-wave radar so a room can stay occupied even when someone is reading, working, or watching TV without much movement.

The practical catch is power. This is not a small battery sensor you can hide anywhere. Meross says the sensor is wired and needs continuous power, and the kit includes a 1.5 m cable. If the best sensing angle is not near an outlet, solve that before treating Matter support as the reason to buy it.

## Matter without Thread

MS600 uses Matter over Wi-Fi, with Meross calling out 2.4 GHz Wi-Fi during setup. That makes it simpler than a Thread sensor for buyers who do not own a Thread border router, but it also means the sensor does nothing for a Thread mesh and adds another Wi-Fi device to the home.

For Apple Home, Google Home, and Alexa, the official page gives a clear enough direct-Matter path. SmartThings and Home Assistant are more of a test-one-first situation: Matter should cover the basic idea, but the exact entities and automation controls can vary.

## Where it makes sense

The MS600 is easiest to justify in a room with a named automation problem. A basement light that shuts off during quiet work, a bathroom fan that should keep running while someone is still inside, or a living room lamp that should respond to both occupancy and brightness are better reasons than a vague desire for more sensors.

The included pet-proof shield and adjustable base help, but presence sensors still need trial placement. Test the final angle with fans, pets, robot vacuums, and normal room movement before sticking it to the wall.

## Who should skip it

Skip MS600 if the wire will bother you, if the room already has crowded 2.4 GHz Wi-Fi, or if you are trying to build a stronger Thread network. Aqara's FP300, Eve Motion, or another Thread sensor is the better comparison when wireless placement or Thread coverage matters more than plugged-in radar sensing.