Meross MS600 Matter Presence Sensor

Quick verdict

The MS600 is Meross's Matter over Wi-Fi presence sensor, combining 24 GHz mmWave and PIR with a light sensor. Over Matter it reports presence and light level, nothing more, and it needs constant USB-C power. I haven't run this one; the notes come from Meross's US store page, the CSA listing and Matter Survey data.

Standout: An inexpensive Matter presence sensor that pairs mmWave radar with PIR and a light sensor.

Notes last checked Nov 6, 2026.

Compatibility snapshot

Why it stands out

• combines 24 GHz mmWave radar with PIR, plus a built-in light sensor
• Meross quotes detection up to 12 m, with presence detection effective up to 6 m
• Matter over Wi-Fi, so no hub or Thread border router is needed

Reasons to hesitate

• must stay plugged in: it runs from a 5 V USB-C adapter, with no battery option
• over Matter only presence and light level are exposed, per Meross
• 2.4 GHz Wi-Fi only, and Meross says it doesn't support enterprise Wi-Fi

Best for

• room presence for lighting automations where a powered spot is available
• Home Assistant users who want mmWave presence without Thread or Zigbee

Avoid if

• you need a battery-powered sensor
• you want zones or distance readings rather than a single presence state

Privacy and local-control notes

Matter over Wi-Fi presence and light sensor. Meross says the Matter integration gives offline control, so occupancy reaches Home Assistant on your local network.

Home Assistant support: supported · integration path: matter.

Buying reality check

Price notes: No extra price notes recorded yet.

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