Aqara Teases FP400 mmWave Presence Sensor w/ Matter support

Aqara has unveiled the Spatial Multi-Sensor FP400 via its EU store, a new high-end presence sensor that builds on the company’s mmWave lineup, adding detailed spatial awareness, multi-person tracking, and Matter compatibility for broader smart home integration.

Originally unveiled at CES 2026, at its core, the FP400 uses mmWave radar combined with AI processing to deliver more granular data than traditional motion or occupancy sensors. Rather than simply detecting movement, the sensor can track the real-time position and posture of multiple occupants, including whether someone is standing, sitting, or lying down.

One of the FP400’s key differentiators is its ability to monitor multiple people simultaneously, with support for tracking up to ten individuals within a space. This enables a level of spatial intelligence not typically seen in most consumer sensors, including:

• Real-time headcount
• Position tracking within defined zones
• Posture recognition
• Movement-based insights such as dwell time and activity patterns

The sensor also supports fine-grained zone mapping, allowing users to divide a room into smaller areas for more precise automations. Lighting or scenes can then be triggered based on where someone is located within a room, rather than simply whether the room is occupied.

When mounted appropriately, the FP400 is capable of fall detection, alongside multi-person monitoring. Aqara also includes exclusion zones, helping reduce false triggers in areas where detection is not required. This positions the device not only for smart home automation, but also for use cases such as assisted living or more advanced occupancy monitoring.

The FP400 is designed to cover larger areas than typical presence sensors, with a coverage area of up to 10 x 8 metres. Flexible installation options allow it to be mounted on walls or ceilings, depending on the required coverage and use case, including features like fall detection. Design-wise the FP400 takes its cues from the FP2, with a built-in USB cable for power and an included and attached bracket, rather than batteries.

From a connectivity standpoint, the FP400 supports both Thread and Zigbee, offering flexibility depending on the setup. As a Matter-enabled device, it can integrate with major smart home platforms via a Matter controller. However, functionality varies depending on how it is connected:

• Matter over Thread: exposed primarily as a presence and light sensor
• Zigbee via an Aqara hub: enables the full range of spatial tracking features and advanced analytics

This distinction reflects current limitations within the Matter standard, where more advanced sensor data types are not yet widely supported, and is similar to the company’s FP300, which offers the same alternatives.

Like the FP300, alongside its spatial tracking capabilities, the FP400 includes a built-in light sensor, enabling automations that take both occupancy and ambient brightness into account. Temperature and humidity sensors are not included, unlike the FP300, however.

With its combination of spatial awareness, posture detection, and environmental data, the FP400 is designed to enable more context-aware automations, moving beyond simple motion-based triggers. The FP400 represents a step forward in presence sensing, shifting from basic occupancy detection and even standard presence detection, to detailed spatial intelligence. While Matter support ensures compatibility with platforms such as Apple Home, many of the more advanced features currently remain tied to Aqara’s own ecosystem via a Hub.

At present there doesn’t appear to be a fixed price, although expect it to be possibly comparable to the company’s FP2.