meross Matter Human Presence Sensor, 3-in-1 PIR & Light &

Product Overview

The meross Matter Human Presence Sensor is a next-generation smart home device designed to deliver reliable motion and presence detection through a combination of PIR, light sensing, and mmWave radar technologies. Ideal for homeowners and smart automation enthusiasts, this 3-in-1 sensor enhances accuracy and responsiveness in detecting movement and occupancy within indoor spaces. By leveraging advanced radar capabilities alongside traditional PIR and ambient light detection, it reduces false triggers and improves performance across varying lighting conditions and environments. The sensor supports seamless integration with popular smart platforms including Apple HomeKit, Amazon Alexa, Google Assistant, and Home Assistant via the Matter protocol. With its dual-band Wi-Fi support (2.4GHz only), the sensor delivers real-time alerts and automations based on precise human presence detection.

Key Features

• Triple-Sensor Technology: Combines passive infrared (PIR), ambient light sensing, and millimeter wave radar to detect motion and human presence more accurately than single-technology sensors. This fusion allows the system to respond reliably whether a person is walking, still, or moving slowly.
• Matter Protocol Support: Enables native interoperability with the latest Matter-enabled devices and ecosystems, ensuring future-proof smart home setups without reliance on proprietary bridges.
• Cross-Platform Compatibility: Works with Apple HomeKit, Amazon Alexa, Google Assistant, and Home Assistant, offering flexible integration into existing smart home routines and voice-controlled environments.
• Real-Time Motion Alerts: Sends immediate notifications when motion or human presence is detected, supporting automated responses such as turning on lights, adjusting thermostats, or triggering security actions.
• 2.4GHz Wi-Fi Connectivity: Uses standard 2.4GHz wireless band for reliable communication with home networks, though does not support 5GHz or Ethernet connections.

Technical Specifications

• Detection Technology: PIR + Light + mmWave Radar (3-in-1)
• Supported Platforms: HomeKit, Alexa, Google Assistant, Home Assistant
• Wi-Fi Frequency: 2.4GHz only
• Protocol: Matter (over IP)
• Operating Environment: Indoor use only

Benefits & Use Cases

This sensor excels in environments where consistent human presence detection is critical, such as hallways, bathrooms, or entryways. Its mmWave radar component enables detection through certain barriers like glass partitions or thin walls, improving coverage in multi-room layouts. The inclusion of ambient light sensing ensures the device can adjust behavior based on room brightness, enhancing energy efficiency by only activating lights when needed. For users managing smart lighting, climate control, or security systems, the sensor provides a dependable trigger for automation workflows. It is particularly valuable in homes with elderly individuals or children, where timely detection can support safety monitoring or routine assistance.

Important Notes

The meross Matter Human Presence Sensor requires a compatible smart home hub or router running 2.4GHz Wi-Fi and supports integration with Matter-compatible apps and ecosystems. Setup involves scanning a QR code and pairing through the respective platform’s app. The sensor is intended for indoor installation only and should be mounted at appropriate height and angle for optimal detection range. No external power adapter is included; the device operates on battery power (typically AA or coin cell, depending on model). Users should ensure their smart home network supports Matter over IP before purchase. The device does not include mounting hardware, so wall or ceiling mounts may be required separately.