frient Air Quality Sensor

Quick verdict

A handy Zigbee sensor for keeping tabs on indoor air quality without any cloud dependency. It tracks VOC levels, temperature, and humidity, giving you the data to build ventilation automations in Home Assistant. VOC sensing is not as precise as true CO2 monitoring, but for triggering a fan or opening a window, it gets the job done. Battery powered and compact enough to place in any room.

Standout: Zigbee air quality sensor covering VOC, temperature, and humidity for ventilation automations.

Notes last checked May 31, 2026.

Compatibility snapshot

Why it stands out

• monitors VOC, temperature, and humidity in a single Zigbee device
• enables ventilation automations based on real air quality data
• compact, battery-powered design that can be placed anywhere in a room

Reasons to hesitate

• VOC sensing is less precise than dedicated CO2 sensors for ventilation decisions
• requires a Zigbee coordinator hub
• no display, so you need Home Assistant or a dashboard to view readings

Best for

• Home Assistant users who want to automate ventilation based on indoor air quality
• EU households looking for a local, cloud-free environmental sensor

Avoid if

• you want precise CO2 readings. A dedicated NDIR CO2 sensor like an AirGradient is better
• you want a sensor with a built-in display for at-a-glance readings

Privacy and local-control notes

Local-only Zigbee sensor. No cloud account, no internet dependency, no external data sharing.

Home Assistant support: supported · integration path: ZHA / Zigbee2MQTT.

Buying reality check

Price notes: Mid-range pricing for a multi-function environmental sensor. Cheaper than dedicated CO2 monitors but less precise for that specific measurement.

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