Yes. It talks Zigbee, not Wi-Fi, so it needs a Tuya-compatible Zigbee hub or gateway to join your network and appear in the app.

Will it detect someone sitting still?

Yes. Millimeter-wave radar senses small movements like breathing, so presence usually stays on while a person sits, unlike a PIR motion sensor.

It is a wired sensor. Plan on a USB power source or adapter near the mounting spot; the package holds the sensor only.

Can it tell one person from another?

No. It reports presence and motion, not identity or a count of people you can rely on.

Will it work through a wall or window?

Radar passes through some materials, so a sensor aimed at a hallway or outside a window can trigger falsely. Aim it at the room you want to watch.

Does it work with Home Assistant?

Often yes through a Zigbee coordinator and a Tuya or generic Zigbee integration, but pairing behavior varies by firmware and is not guaranteed.

Unbranded

Tuya Zigbee Smart Home High- Millimeter-Wave Human Presence Sensor

Best price now

$15.77at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Unbranded

Tuya Zigbee Smart Home High- Millimeter-Wave Human Presence Sensor

Best price now

$15.77at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $15.77 at Walmart on Nov 9.

Our take on the Tuya Zigbee Smart Home High- Millimeter-Wave Human Presence Sensor

A small white plastic sensor that uses 24 GHz millimeter-wave radar to detect people in a room, including people who are sitting still. It reports over Zigbee to a Tuya-compatible hub, so it needs a hub and a Zigbee network to do anything. Compared with passive infrared motion sensors, it holds presence instead of dropping when someone stops moving, which is what makes it useful for lighting and climate automation. The trade-off is that it is a bare sensor with no hub, no app of its own and no mounting hardware beyond what the box holds.

Best forAutomating lights in rooms where people sit stillBathrooms and small offices with no motion to trigger PIRTuya or Smart Life users with an existing Zigbee hubPresence-based heating and cooling rules

Pros

Detects stationary presence, not just movement
Zigbee radio keeps it off Wi-Fi and low on power
Small white housing fits ceilings and corners
Works inside Tuya and Smart Life automations
Radar sees through thin plastic and glass covers

Cons

Requires a Zigbee hub; no hub in the box
Unbranded unit with no firmware support promise
No battery or power supply included
Radar can trigger through walls and windows if placed badly
Setup and sensitivity tuning are not documented well

Tuya Zigbee Smart Home High- Millimeter-Wave Human Presence Sensor prices at every store

WalmartNew
In stockSold by RK Electronics Co.LtdReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$15.77Free shippingChecked Nov 9
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About the Tuya Zigbee Smart Home High- Millimeter-Wave Human Presence Sensor

This is a Tuya Zigbee smart home human presence sensor that uses millimeter-wave technology. It has a plastic body in white.

Color: White
Material: Plastic
Connectivity: Zigbee (Tuya)
Sensing: Millimeter-wave human presence
In the box: 1 x sensor

Questions and answers

Does it need a hub?: Yes. It talks Zigbee, not Wi-Fi, so it needs a Tuya-compatible Zigbee hub or gateway to join your network and appear in the app.
Will it detect someone sitting still?: Yes. Millimeter-wave radar senses small movements like breathing, so presence usually stays on while a person sits, unlike a PIR motion sensor.
How is it powered?: It is a wired sensor. Plan on a USB power source or adapter near the mounting spot; the package holds the sensor only.
Can it tell one person from another?: No. It reports presence and motion, not identity or a count of people you can rely on.
Will it work through a wall or window?: Radar passes through some materials, so a sensor aimed at a hallway or outside a window can trigger falsely. Aim it at the room you want to watch.
Does it work with Home Assistant?: Often yes through a Zigbee coordinator and a Tuya or generic Zigbee integration, but pairing behavior varies by firmware and is not guaranteed.
Where is the Tuya Zigbee Smart Home High- Millimeter-Wave Human Presence Sensor cheapest?: At Walmart, for $15.77, as of our latest check.