# frient Intelligent Smoke Alarm

*frient / SMSZB-120*

> The frient Intelligent Smoke Alarm is a Zigbee 3.0 optical smoke alarm with an 85 dB siren, certified to DIN EN 14604. One CR123 battery runs it for about 3 years. It suits SmartThings users, with native support through Zigbee. Home Assistant users reach it through an integration (Zigbee).

- Canonical page: https://smarthomecanon.com/devices/frient-intelligent-smoke-alarm
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [frient](https://smarthomecanon.com/brands/frient) |
| Category | Smoke or gas detector |
| Model numbers | SMSZB-120 |
| Status | Current[^1] |
| Detects | Smoke, temperature[^2] |
| Siren | 85 dB at 3 m[^2] |
| Power | 1 CR123 battery, about 3 years[^2] |
| Radio | Zigbee 3.0[^2] |
| Standard | DIN EN 14604[^2] |
| Dimensions | Diameter 65 x 40 mm[^2] |
| IP class | IP20[^2] |
| Operating temp | 0 to 50 C[^2] |
| Zigbee role | End device[^2] |
| Sensor type | Optical smoke sensor[^2] |
| Temperature range | 0 to 50 C, accuracy plus or minus 0.5 C[^2] |

## Integration paths

**How the frient Intelligent Smoke Alarm connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Zigbee](https://smarthomecanon.com/protocols/zigbee) | A Zigbee hub or coordinator[^2][^3] | unknown | unknown |

**Platform support for the frient Intelligent Smoke Alarm**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Zigbee | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | Via integration[^4] | Zigbee Home Automation (ZHA) or Zigbee2MQTT |
| Zigbee | [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) | Native[^5][^6] |  |
| Zigbee | [Hubitat Elevation](https://smarthomecanon.com/platforms/hubitat) | Via integration[^7] |  |
| Zigbee | [Homey](https://smarthomecanon.com/platforms/homey) | Via integration[^8][^3] | frient app for Homey |

## Related pages

- [frient alarms and sirens](https://smarthomecanon.com/lines/frient-alarms-and-sirens) (line)
- [frient](https://smarthomecanon.com/brands/frient) (brand)
- [Zigbee](https://smarthomecanon.com/protocols/zigbee) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Samsung SmartThings](https://smarthomecanon.com/platforms/smartthings) (platform)
- [Hubitat Elevation](https://smarthomecanon.com/platforms/hubitat) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: Products - frient. https://www.frient.com/products (manufacturer, checked 2026-10-20)
[^2]: Intelligent Smoke Alarm - frient. https://www.frient.com/products/intelligent-smoke-alarm (manufacturer, checked 2026-10-20)
[^3]: FAQ - frient. https://www.frient.com/en-us/faq (manufacturer, checked 2026-10-20)
[^4]: frients with Home Assistant - frient. https://www.frient.com/compatible-hubs/frients-with-home-assistant (manufacturer, checked 2026-10-20)
[^5]: frients with SmartThings - frient. https://www.frient.com/compatible-hubs/frients-with-smartthings (manufacturer, checked 2026-10-20)
[^6]: The frient devices are now Works with SmartThings certified - frient. https://www.frient.com/the-friently-blog/the-frient-devices-are-now-works-with-smartthings-certified (manufacturer, checked 2026-10-20)
[^7]: frients with Hubitat - frient. https://www.frient.com/compatible-hubs/frients-with-hubitat (manufacturer, checked 2026-10-20)
[^8]: frients with Homey - frient. https://www.frient.com/compatible-hubs/frients-with-homey (manufacturer, checked 2026-10-20)