# Nuki Door Sensor

*Nuki / EAN 9120072084393*

> The Nuki Door Sensor is a magnetic open and closed sensor that adds door status to a Nuki Smart Lock. It connects over Bluetooth and runs on a 3.6V lithium battery. It suits Home Assistant users through an integration (Bluetooth).

- Canonical page: https://smarthomecanon.com/devices/nuki-door-sensor
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Nuki](https://smarthomecanon.com/brands/nuki) |
| Category | Contact sensor |
| Model numbers | EAN 9120072084393 |
| Status | Current[^1] |
| Form | Magnetic door sensor[^1] |
| Connection | Bluetooth 5.0 to the Nuki Smart Lock[^2] |
| Matter | unknown |
| Tap to Unlock | unknown |
| Unlock methods | unknown |
| Power | 3.6V lithium battery (1/2 AA ER14250), about 2 years[^2][^1] |
| Released | withheld |

## Integration paths

**How the Nuki Door Sensor connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [BLE](https://smarthomecanon.com/protocols/ble) | Nuki Smart Lock[^1][^2] | unknown | unknown |

**Platform support for the Nuki Door Sensor**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| BLE | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | ArnyminerZ/ha-nuki-web |

## Related pages

- [Nuki smart locks](https://smarthomecanon.com/lines/nuki-smart-locks) (line)
- [Nuki](https://smarthomecanon.com/brands/nuki) (brand)
- [Bluetooth Low Energy](https://smarthomecanon.com/protocols/ble) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)

## Sources

[^1]: Door Sensor - Nuki US. https://nuki.io/en-us/products/door-sensor (manufacturer, checked 2026-10-20)
[^2]: Door Sensor technical details - Nuki US. https://nuki.io/en-us/products/product-details/door-sensor-technical-details (manufacturer, checked 2026-10-20)