# ThirdReality Smart Presence Sensor R3

*ThirdReality / R3*

> The ThirdReality Smart Presence Sensor R3 detects presence with a 60 GHz mmWave radar. It is a Zigbee 3.0 sensor that takes USB-C power. It also has a built-in RGB status light, an ambient light sensor, TVOC air quality monitoring and a Zigbee repeater. It suits Alexa users, with native support through Zigbee. SmartThings and Home Assistant users reach it through an integration (Zigbee).

- Canonical page: https://smarthomecanon.com/devices/thirdreality-smart-presence-sensor-r3
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [ThirdReality](https://smarthomecanon.com/brands/thirdreality) |
| Category | Presence sensor |
| Model numbers | R3 |
| Status | Current[^1] |
| Type | Presence[^1] |
| Radio | Zigbee 3.0[^1] |
| Power | USB-C, 5 V 1 A[^1] |
| Hub needed | Zigbee hub required[^1] |

## Integration paths

**How the ThirdReality Smart Presence Sensor R3 connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Zigbee](https://smarthomecanon.com/protocols/zigbee) | A Zigbee hub or an Echo device with a built-in Zigbee hub[^1] | unknown | unknown |

**Platform support for the ThirdReality Smart Presence Sensor R3**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Zigbee | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Native[^1] |  |
| Zigbee | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | Via integration[^1] | ZHA or Zigbee2MQTT |
| Zigbee | [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) | Via integration[^1] |  |
| Zigbee | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | com.thirdreality.app |

## Related pages

- [ThirdReality Zigbee sensors](https://smarthomecanon.com/lines/thirdreality-zigbee-sensors) (line)
- [ThirdReality](https://smarthomecanon.com/brands/thirdreality) (brand)
- [Zigbee](https://smarthomecanon.com/protocols/zigbee) (protocol)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: Smart Presence Sensor R3 - ThirdReality store. https://www.thirdreality.com/products/smart-presence-sensor-r3 (manufacturer, checked 2026-10-12)