meross Matter Human Presence Sensor 3-in-1 mmWave PIR

The meross Matter Human Presence Sensor is a wired 3-in-1 motion and presence detector combining mmWave radar, PIR, and ambient light sensing for reliable smart-home automation across HomeKit, Alexa, Google, and Home Assistant.

This compact wall-mount sensor blends multiple detection technologies to distinguish real human presence from simple motion, improve lighting decisions, and reduce false triggers from pets or vacuums. It supports Matter for local control (hub required for Matter), works directly with major ecosystems, and offers a flexible mount with cable management for neat installations. Use it to automate lights, scenes, or presence-aware routines with better responsiveness and privacy than many single-tech sensors.

How does its 3-in-1 sensing improve reliability?

The device merges mmWave radar, passive infrared (PIR) motion sensing, and an ambient light sensor so it can detect both movement and stationary presence while considering room lighting. Combined sensing reduces false positives, helps recognize stationary users, and enables context-aware actions like turning lights on only when illumination is low.

• mmWave radar detects micro-movements and presence even without obvious motion.
• PIR reliably senses typical human motion and heat signatures.
• Ambient light input prevents lights from switching on when natural light is sufficient.
• Sensor fusion lowers false triggers from pets, drafts, or heating vents.

What smart home platforms and connectivity does it support?

meross designed this presence sensor for multi-ecosystem use: it integrates with the Meross cloud/app and major smart home platforms, including HomeKit, Alexa, Google Home, and Home Assistant. For Matter-enabled local control and improved privacy, a Matter-capable hub is required; otherwise it operates over 2.4 GHz Wi‑Fi without a hub for most integrations.

• Works with HomeKit, Alexa, Google, Home Assistant, and Meross app.
• Matter support adds low-latency local control when paired via a Matter hub.
• Connects via 2.4 GHz Wi‑Fi for cloud or app control when Matter hub absent.
• No separate hub needed for common integrations outside Matter mode.

How easy is installation and what are the mounting options?

The sensor comes with an adjustable base that pivots 180° and rotates 360° so you can aim detection precisely; integrated cable routing keeps the installation tidy. It’s designed for continuous power, so plan a nearby outlet or wiring; the package includes a pet-proof shield to avoid accidental activation by animals or robot vacuums.

• Adjustable base for precise angle and rotation.
• Integrated cable management for clean wiring runs.
• Continuous power required — plan outlet or wiring access.
• Pet-proof shield reduces false activations from pets/robots.

What are the detection range and practical use cases?

The detector senses motion up to about 12 meters and presence reliably within roughly 6 meters, making it suitable for hallways, living rooms, entryways, and offices. Its sensitivity and light-awareness let you build automations that react only when needed — for example, turning on corridor lighting after sunset when someone enters, or setting a room to an "occupied" state for HVAC and presence-based scenes.

• Motion detection range: up to 12 meters for moving subjects.
• Presence detection: effective up to ~6 meters for stationary occupants.
• Ideal for lighting automation, presence scenes, and occupancy-based controls.
• Pet-proofing helps if you have small animals or cleaning robots.

Who is this for: homeowners, renters with wired access, and smart-home installers who want a more accurate, privacy-friendly presence detector that works across ecosystems. Choose this sensor if you need reliable occupancy detection for lighting, HVAC, or security automations, want Matter local-control compatibility via a hub, and prefer a tidy, adjustable wall-mounted solution that minimizes pet and robot false triggers.