SwitchBot W8200001 2-Pack mmWave Presence Sensor

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Product guide

SwitchBot W8200001 2-Pack mmWave Presence Sensor

SwitchBot W8200001 is a battery-powered mmWave presence sensor listed as a two-pack. Its combination of radar, PIR and light sensing is intended to detect people who remain still, while hub-free local linkage supports basic SwitchBot automations.

At a glance

mmWave radar, PIR and a light sensor are described as detecting movement and subtle chest movements while a person is still.
Basic linkage with SwitchBot devices is claimed to work without a hub, with up to two automations. A hub is needed for more complex scenarios and for stated Matter integrations.
Magnetic base is described for flat placement, wall mounting and adjusting the detection direction.
Listing describes a 120° field, with separate ranges for moving and stationary people.

Price

£39.99Save 33%

Reference price: ~~£59.99~~

Price checked: 12 Nov 2026

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Often bought together

SwitchBot 2-Pack mmWave Presence Sensor, Battery-Powered Motion Sensor | mmWave, PIR & Light Sensor detects motion and stilln

Pros and cons

Pros

Stillness detection is a useful fit for occupancy-triggered lighting where PIR-only movement detection may switch lights off while someone is seated.
Battery operation avoids needing a power cable at the sensor location.
Local SwitchBot linkage without a hub is described for up to two automations.

Cons

The expanded smart-home integrations and more complex scenarios depend on a separately sold SwitchBot hub.
Detection distance depends on whether the person is moving or stationary, so the listed maximum range should not be treated as a single usable range for every situation.

Technical specifications

16 specifications

Identity
Brand	SwitchBot
Model	W8200001
Pack quantity listed	2

Detection
Radar frequency	60 GHz
Detection angle	120°
Range for moving humans	up to 8 m
Range for stationary humans	5 m
Maximum range listed	393 Feet

Power and battery
Power configuration	Battery Powered
Battery life listed	3 years
Battery requirement	2 AAA batteries required.

Dimensions and installation
Mounting type listed	Wall Mount
Dimensions (D × W × H)	54D x 28W x 54H millimetres

Compatibility
Compatible devices	SwitchBot Hub, Alexa, Google Home, Home Assistant, SwitchBot devices

Other
Colour	White
Country of origin	China

What to know before buying

Listing details to confirm

The listing is inconsistent about quantity and battery life: the title says 2-Pack while the explicit contents list says Presence Sensor × 1, the item count says 1 and the pack count says 2. Battery life is listed as 3 years in details but described as up to 2 years in the feature text. It also gives a maximum range of 393 Feet alongside specific ranges of up to 8 m for moving people and 5 m for stationary people. Confirm the selected listing's sensor quantity and applicable range and battery-life claims before buying.

What’s in the box

Included

Presence sensor × 1

Who is it for?

A good fit for

People automating lights in rooms where someone may sit still, such as a reading area or home office.
Existing SwitchBot users wanting battery-powered presence sensing and basic local device linkage.
Buyers who can use a SwitchBot Hub for the more complex automations or ecosystem integrations they need.

Less suited to

Buyers needing a confirmed two-sensor bundle without checking the seller's selected listing.
People who require hub-free Matter or Apple Home integration.
Installations that depend on one confirmed, unconditional detection distance or battery-life figure.

SwitchBot W8200001 2-Pack mmWave Presence Sensor · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 501 ratings

5 stars67%67%
4 stars13%13%
3 stars7%7%
2 stars6%6%
1 star7%7%

Customer feedback describes good presence detection, including detecting someone still in a room, and reports straightforward setup, useful positioning and good battery life. Some customers also report connection issues. These impressions are relevant if you want stillness-based lighting automation, but do not resolve the listing's conflicting package quantity, battery-life claims or detection ranges.

Positive themes

Customers report effective presence detection, including while someone remains still.
Feedback notes easy setup, battery life and flexible positioning.

Negative themes

Some customers report connection issues.

Mixed feedback

Connectivity is described as straightforward by some customers, while others report problems.

Frequently asked questions

Does the listing confirm that two sensors are included?

No. The title says 2-Pack, but the contents list names one Presence Sensor and the item count is also one. Check the selected listing's package details before ordering.

Can it detect someone who is sitting still?

The listing says its mmWave and PIR sensing can detect subtle chest movements from stationary people, and gives a separate 5 m range for stationary humans.

Is a hub required?

The listing says basic SwitchBot device linkage works without a hub, with up to two automations. A SwitchBot Hub is required for more complex scenarios and is named as necessary for the described Matter integrations.

How long does the battery last?

The details list 3 years, while a feature claim says up to 2 years on a single charge. These claims conflict, so treat battery life as unconfirmed for the selected listing.