SwitchBot presence sensor

The SwitchBot occupancy sensor was designed for those who want more than just motion detection from their smart home. It combines three sensing technologies, offers long battery life, flexible installation and quick automation without the need for a hub in simpler scenarios. This makes it ideal for places where standard sensors are not enough – in the bathroom, home office, living room or reading corner – anywhere you might be idle for extended periods of time. It is a sophisticated solution for those who want greater comfort, better control over lighting and appliances, and privacy without cloud storage or recording.

Three technologies in one device

Unlike standard motion sensors, SwitchBot uses an advanced 3-in-1 system that combines a light sensor to detect ambient light levels, a PIR sensor to detect motion quickly, and a mmWave radar to detect presence. This combination significantly increases speed and accuracy, as the device is not limited to detecting motion alone, but can also recognize the presence of a person standing still. The sensor even detects the movement of a stationary person's chest, making it ideal for use while bathing, working at a desk, resting, or reading. In practice, this means no more situations where the light turns off simply because you haven't moved for a moment.

No more unwanted light switches off

One of the biggest advantages of the SwitchBot occupancy sensor is its ability to distinguish between normal movement and the presence of a person in a room. This is especially important in rooms where you often linger without much movement, such as the bathroom, home office, bedroom or living room. Thanks to mmWave technology supported by PIR and a light sensor, the system can keep lights on or activate specific devices exactly when needed. Instead of annoying interruptions and unintentional switching off of lights, you get a more natural, convenient and smart control of the entire room.

Wide range and more complete coverage of the space

SwitchBot offers a wide 120° detection angle, allowing you to cover a larger area without the need for complex installation planning. The detection range for moving people is up to 8 meters and for stationary people is up to 5 meters, allowing the device to operate effectively in both smaller spaces and more open areas of the home. These parameters allow the sensor to provide complete coverage of rooms from the bathroom to the living room, meeting the needs of different usage scenarios. Whether it is controlling light at the entrance, supporting the comfort of remote working, or ensuring comfort during daily activities, it works reliably and accurately.

A battery that offers freedom of installation

The well-thought-out battery design allows you to place the sensor exactly where it will be most effective, without the constraints of a power cable. With a strong magnetic mount, it can be mounted on a bookshelf, table or metal shelf, and thanks to IPX5 protection, it can also be safely used in the bathroom. The device is equipped with an energy-efficient mmWave radar with extremely low power consumption, which allows it to operate for up to 2 years with a single battery change. This solution simplifies installation, increases the convenience of everyday use and allows you to easily move the sensor between rooms if your needs change.

Magnetic base and flexible installation

SwitchBot has a magnetic base that offers a lot of freedom in positioning the device. You can place the sensor flat, mount it on a wall, and adjust its detection angle to better adapt its operation to a specific interior. This flexibility makes it easy to adjust the detection area to the conditions in your bathroom, living room, home office, or other rooms in your home. Adjusting the detection area also helps reduce unintentional activations and allows you to better utilize the full potential of the sensor in everyday automation.

Fast, hub-less automation

The SwitchBot presence sensor is designed to enable instant automation between devices without the need for a hub. This means lightning-fast response times – measured in seconds – and the convenience of creating simple local scenarios. The sensor can work directly with selected SwitchBot devices and can be configured for up to 2 automations, which is more than enough for many everyday applications. If you need more advanced automation involving multiple devices at once, the sensor can work with a SwitchBot hub. This combination opens the door to creating more complex scenes, such as automatically turning on your lights and air purifier while you work from home.

Fewer false alarms, greater efficiency

SwitchBot offers a self-learning function with artificial intelligence, which can be activated with a single click, to automatically filter out interference caused by fans, air conditioners and other sources of motion that are not related to human presence. This is an important feature that improves detection accuracy and reduces the number of unnecessary automation triggers. Combined with the ability to rotate the sensor and adjust the detection area, the magnetic base also helps you better control the device's coverage area and more effectively prevent false triggers caused by pets. This allows the sensor to adapt to a wide variety of living conditions and the specific layout of any interior.

Compatibility with popular smart home platforms

The SwitchBot Presence Sensor supports Matter and works with Alexa, Google Home, Home Assistant and SmartThings, allowing for easy integration into your existing smart home system. Apple Home support is available via the SwitchBot Matter Hub, offering even greater flexibility for users of the Apple ecosystem. In addition, the SwitchBot stores data locally, without storing or recording it in the cloud. This is especially important in spaces such as the bathroom, bedroom or home office, where the convenience of smart solutions should go hand in hand with a sense of privacy. This allows you to use automation and advanced presence detection without worrying about your daily activities being unnecessarily recorded.

Warranty: 12 months

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Same summary

The SwitchBot W820000 motion sensor is best suited for users looking for a simple standalone motion detection solution without complicated installation and additional components. By combining mmWave and PIR technologies, it can reliably detect even small movements, which is useful for basic automation or alerting in apartments, hallways or offices.

Since the sensor does not support WiFi and does not require a control panel, it can be quickly integrated into your existing home setup – but it is not suitable for more advanced connection with remote control or larger automations in a smart ecosystem. The well-balanced combination of accuracy, simplicity and energy efficiency will best suit those who want simple detection without additional compatibility concerns.

Recommendation source: Enaa guides and team experiences.

User view

Many users choose this type of motion sensor when they want fast, connected, and discreet motion control in selected spaces without the hassle of complicated setup or an additional smart hub. It is most often used in hallways, living rooms, basements, or entryways for lighting automation or basic burglar alarm systems – especially those that don't require cloud connectivity or are not locked into a single ecosystem.

Users also often appreciate the reliability and simplicity of SwitchBot devices, as they allow for quick installation and are suitable for completely standalone use without additional equipment.

Why buy at Enaa

We offer a wide range of smart sensors and detectors, so you can choose according to the needs of your home. On our website, we always clearly indicate whether the device requires an additional control panel, which makes the choice easier and prevents unnecessary complexity in use.

Answers to frequently asked questions

Can I use the sensor alone without additional devices?

Yes, this sensor does not require an additional control panel and allows standalone use, so it is suitable for those who want a simple solution without integration into a wider smart system.

Where is it recommended to install the sensor for the best detection effect?

It is optimal to install it in the room where you want to detect movement - for example, at the entrance to the apartment, in the hallway or living room, but make sure that it has an unobstructed view of the area you want to monitor.

Is the sensor suitable for outdoor use?

This model is designed primarily for indoor use. Outdoor or humid use is not recommended as it may affect its performance and lifespan.

What does it mean that the sensor supports mmWave + PIR technology?

The combination of mmWave and PIR allows for the detection of both subtle and larger movements, increasing reliability and reducing the possibility of false alarms compared to simple sensor types.

Is the device suitable for automating lights or other devices?

It allows you to automate basic tasks, such as turning on lights when motion is detected, if your devices are compatible with the basic functionality of the sensor switch.

Description updated: May 2026