Short version: The Tuya Zigbee mmWave Human Presence Sensor is designed to detect if someone is in a room, even if they are sitting still. It connects to Home Assistant using Zigbee, a common smart home radio technology, through integrations like ZHA or Zigbee2MQTT. The main catch is ensuring you buy the correct Zigbee version and have a Zigbee coordinator, which is a USB stick or device that lets Home Assistant talk to Zigbee devices.
Updated November 2026.
What the Tuya Zigbee mmWave presence sensor is
This sensor is a smart home device that can tell if a person is present in a room, even if they are not moving. Unlike traditional motion sensors that rely on infrared to detect movement, this sensor uses millimeter wave (mmWave) radar technology. MmWave radar sends out radio waves and listens for reflections, which allows it to detect very subtle movements like breathing or a slight shift in posture. This means the lights will not turn off if you are reading quietly on the couch.
The listing typically includes the sensor unit itself and a power adapter. This model is mains powered, meaning it plugs into a wall outlet (available in 5V USB, 110V, or 220V versions), so you do not need to worry about changing batteries. It communicates using Zigbee, a wireless communication standard for smart home devices. Zigbee devices create a mesh network, where each mains-powered device can help relay signals, making your network more robust and extending its range. The sensor also includes capabilities for luminance detection, which measures the ambient light level, and distance detection, which can tell how far away a person is.
Home Assistant compatibility
The Tuya Zigbee mmWave presence sensor is generally compatible with Home Assistant, especially when using a Zigbee integration. However, it is crucial to ensure you purchase the Zigbee version of the sensor, as the listing often includes Wi-Fi variants that work differently.
| Option | Works? | Notes |
|---|---|---|
| ZHA | Likely | ZHA, or Zigbee Home Automation, is a built-in Home Assistant integration. Support can vary by specific firmware versions of Tuya devices. You may need to check the ZHA device compatibility list. |
| Zigbee2MQTT | Yes | Zigbee2MQTT is a popular add-on for Home Assistant that often has broader support for Tuya Zigbee devices. It usually provides more control over advanced features and settings. |
| Tuya (cloud integration) | Yes | The official Tuya integration in Home Assistant connects to the Tuya cloud. While it works, it means your device data goes over the internet and may experience delays. We recommend local control. |
| Matter | No | This is a Zigbee device. Zigbee and Matter are different smart home standards, so this sensor does not directly support Matter. |
| Local or cloud | Local with ZHA/Zigbee2MQTT | When connected via ZHA or Zigbee2MQTT with a Zigbee coordinator, the sensor works locally, keeping your data within your home network. Using the Tuya cloud integration means cloud-based control. |
Who it is for
This Tuya Zigbee mmWave presence sensor is ideal for Home Assistant users who want highly accurate occupancy detection in specific rooms or areas. If you have experienced lights turning off while you are still in a room because you were not moving enough, an mmWave sensor can solve that problem. It is also a good fit for those who already have a Zigbee network set up with a Zigbee coordinator and want to expand their smart home capabilities with reliable local control.
You might want to skip this sensor if you are looking for a simple, budget-friendly motion sensor for basic light automation, as traditional passive infrared (PIR) motion sensors are often cheaper and easier to set up for simple movement detection. Also, if you do not have a Zigbee coordinator and are not planning to build a Zigbee network, this sensor will not work for you without additional hardware. If you prefer devices that connect directly to Wi-Fi without an extra hub, this Zigbee sensor is not the right choice.
How to set it up in Home Assistant
Setting up the Tuya Zigbee mmWave presence sensor in Home Assistant usually involves your Zigbee integration. For Tuya Zigbee devices, Zigbee2MQTT often provides the most robust support and control over all the sensor’s features. Here are the general steps:
- Power on the sensor: Plug your Tuya Zigbee mmWave sensor into a power outlet. It should enter pairing mode automatically, often indicated by a flashing light. If not, consult the sensor’s manual for how to put it into pairing mode.
- Enable pairing in Zigbee2MQTT: In Home Assistant, navigate to Settings > Devices & services. Find your Zigbee2MQTT integration and click Configure. In the Zigbee2MQTT interface, go to the Permit join tab and toggle the switch to enable joining for new devices.
- Reset the sensor if needed: If the sensor does not appear after a minute, you might need to manually reset it. Look for a small pinhole button on the device. Use a paperclip to press and hold it for 5-10 seconds until the indicator light flashes rapidly, then release. This usually forces it into pairing mode.
- Wait for the device to appear: Keep Zigbee2MQTT’s Permit join active. The sensor should soon appear in the Zigbee2MQTT interface under the Devices tab. It might take a minute or two.
- Name and configure: Once detected, give your sensor a meaningful name. You can then access its settings to adjust sensitivity, detection distance, and other parameters that Zigbee2MQTT exposes. These settings are then available as entities in Home Assistant.
- Integrate into Home Assistant: After pairing with Zigbee2MQTT, the sensor’s entities (like presence, luminance, and distance) will automatically appear in Home Assistant. You can find them under Settings > Devices & services > Entities.
- Create automations: Use the sensor’s entities in Home Assistant automations. For example, turn on lights when presence is detected and turn them off when no presence is detected for a certain period.
Common issues and variants to avoid
- Wi-Fi vs. Zigbee versions: Many AliExpress listings for this type of sensor include both Wi-Fi and Zigbee variants. Always double-check the product title, description, and variant selector before buying to ensure you are getting the Zigbee version. The Wi-Fi version typically relies on the Tuya cloud, which is not ideal for local Home Assistant control.
- Pairing difficulties: If the sensor does not pair, try moving it closer to your Zigbee coordinator during the pairing process. Ensure no other Zigbee networks are interfering, and try resetting the sensor again. Sometimes, a weak Zigbee mesh can cause issues.
- Optimal placement: MmWave sensors are sensitive to placement. Avoid pointing them directly at windows, large metal objects, or fans, as these can cause false detections or reduce accuracy. Experiment with different heights and angles to find the best spot for reliable detection in your room.
- Power requirements: Confirm the power input voltage (5V USB, 110V, or 220V) matches your region and available outlets. The listing often offers different options, so choose carefully.
- Firmware variations: Tuya devices can have different firmware versions, even for the same model number. While Zigbee2MQTT generally handles these well, occasionally a specific firmware might have slightly different features or require a newer version of Zigbee2MQTT to be fully supported.
Should you buy it?
The Tuya Zigbee mmWave Human Presence Sensor is a compelling option for Home Assistant users who need precise and reliable occupancy detection. Its ability to detect subtle movements makes it superior to traditional motion sensors for preventing lights from turning off prematurely. If you already have a robust Zigbee network and are comfortable with Home Assistant’s Zigbee integrations, this sensor can significantly enhance your home automation.
However, if you are new to smart home technology and do not yet have a Zigbee coordinator, or if your primary need is simple motion detection without the nuances of presence, a standard PIR motion sensor might be a simpler and more cost-effective starting point. Always remember to verify you are purchasing the Zigbee version from the listing to ensure compatibility with your local Home Assistant setup.
Frequently Asked Questions
Does the Tuya Zigbee mmWave presence sensor work with Home Assistant without the cloud?
Yes, if you connect it using a Zigbee integration like ZHA or Zigbee2MQTT, it can work locally. These integrations communicate directly with your Zigbee coordinator, keeping data within your home network.
Do I need a hub for the Tuya Zigbee mmWave presence sensor?
You need a Zigbee coordinator, which acts as a hub for your Zigbee devices to communicate with Home Assistant. This is typically a USB stick plugged into your Home Assistant server, not a separate smart home hub from a brand like Tuya.
Should I get the Zigbee or Wi-Fi version of the Tuya mmWave sensor?
For Home Assistant, the Zigbee version is almost always preferred because it offers local control and is generally more reliable and responsive. The Wi-Fi version often relies on the Tuya cloud, which can have delays and potential privacy concerns.