# SONOFF SNZB-04PR2

*SONOFF / SNZB-04PR2*

> The SNZB-04PR2 (SenseGuard DW Gen2) needs a Zigbee 3.0 hub or coordinator. It is a slim door and window sensor with tamper detection that takes two AAA batteries. It suits HomeKit users through an integration (a Matter bridge). SmartThings and Home Assistant users reach it through an integration (Zigbee).

- Canonical page: https://smarthomecanon.com/devices/sonoff-snzb-04pr2
- Last checked: 2026-10-13

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [SONOFF](https://smarthomecanon.com/brands/sonoff) |
| Category | Contact sensor |
| Model numbers | SNZB-04PR2 |
| Status | Current[^1] |
| Type | Door and window[^1] |
| Power | 2 x AAA batteries[^1] |
| Radio | Zigbee (IEEE 802.15.4)[^1] |
| In Zigbee2MQTT docs | Yes[^2] |

## Integration paths

**How the SONOFF SNZB-04PR2 connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Matter via Bridge](https://smarthomecanon.com/protocols/matter-bridged) | A SONOFF Matter bridge, such as the Zigbee Bridge Ultra[^3] | unknown | unknown |
| [Zigbee](https://smarthomecanon.com/protocols/zigbee) | A Zigbee 3.0 hub or coordinator[^1] | unknown | unknown |

**Platform support for the SONOFF SNZB-04PR2**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Matter via Bridge | [HomeKit](https://smarthomecanon.com/platforms/homekit) | Via integration[^3] |  |
| Zigbee | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | Via integration[^1] | SONOFF Zigbee dongle (ZHA needs a script) |
| Zigbee | [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) | Via integration[^1] |  |

## Related pages

- [SONOFF sensors and buttons](https://smarthomecanon.com/lines/sonoff-zigbee-sensors) (line)
- [SONOFF](https://smarthomecanon.com/brands/sonoff) (brand)
- [Matter through a bridge](https://smarthomecanon.com/protocols/matter-bridged) (protocol)
- [Zigbee](https://smarthomecanon.com/protocols/zigbee) (protocol)
- [HomeKit](https://smarthomecanon.com/platforms/homekit) (platform)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) (platform)

## Sources

[^1]: SONOFF store: SONOFF SenseGuard DW Gen2 Zigbee Smart Door/Window Sensor | SNZB-04PR2. https://sonoff.tech/products/sonoff-senseguard-dw-gen2-zigbee-door-window-sensor-snzb-04pr2 (manufacturer, checked 2026-10-10)
[^2]: Zigbee2MQTT: SONOFF SNZB-04PR2. https://www.zigbee2mqtt.io/devices/SNZB-04PR2.html (platform documentation, checked 2026-10-10)
[^3]: SONOFF Zigbee Bridge Ultra. https://sonoff.tech/products/sonoff-zigbee-bridge-ultra (manufacturer, checked 2026-10-13)