Chinese AI-enabled embodied home robotics company SwitchBot has launched a battery-powered presence sensor, equipped with a 60Hz mm-wave radar, passive infra-red (PIR) sensor and light sensor.

Designed to solve the limitations of traditional motion sensors, the presence sensor is said to deliver more accurate room detection, smarter lighting automation and greater energy efficiency in everyday home scenarios.

While the PIR sensor provides rapid initial detection of human entry, the mm-wave radar enables micro-motion recognition, capturing the most subtle physiological movements such as breathing or minor posture adjustments. This allows the sensor to maintain accurate occupancy status even when a person remains stationary, tackling the inherent limitation of conventional PIR-only sensors.

With the built-in light sensor to determine the light condition within the room, the presence sensor combines motion, micro-motion and light condition data, providing support for context-aware automation, ensuring lighting and home appliances remain active when a room is truly occupied while reducing false activations.

Additionally, it has also incorporated multiple anti-interference features, including AI environmental learning to help the sensor precisely identify the frequency of fans or air conditioners, and eliminate the influence of these items. A pet-avoidance function is also supported through angle adjustment using its rotatable magnetic base, reducing false triggers caused by small animals.

The sensor delivers up to two years of battery life on two AAA batteries.

Combined with a magnetic, adhesive-ready base, the sensor can be placed on walls, desks or metal surfaces without wiring. Rated IPX5, it is suitable for bathrooms and humid environments, offering coverage up to 8m for movement and 5m for static presence with a 120˚ detection angle.

The presence sensor supports Matter via SwitchBot Matter-enabled hubs, Home Assistant and third-party voice assistants, enabling presence and light-level data to be displayed and used across multiple smart home platforms.

In addition to cloud-based integrations, the sensor also supports local automation, allowing it to trigger actions, such as lighting or appliance control, even without internet. This combination of broad ecosystem compatibility and offline functionality ensures responsive, reliable operation in any environment.

The sensor is available at www.switch-bot.com and through Amazon Stores.