Outdoor + indoor set
Altruist Dual
A set of two air quality meters: Altruist Urban for outdoors and Altruist Insight for indoors.
€320 on Cyberpunks.shop
Buy on Cyberpunks.shopWorldwide shipping · 2-year warranty in the EU · free returns
- Outdoors: PM2.5, PM10, noise, temperature, humidity and pressure
- Indoors: true CO₂ (NDIR), VOC index, temperature, humidity and pressure
- Street and room side by side on the 4.2" E-Ink display
- Wall mount for Urban included
Indoor and outdoor air on one screen
Altruist Insight finds Altruist Urban on your Wi-Fi and shows the street readings right next to your room's on its E-Ink display. One glance tells you when opening the window brings fresher air in.
Indoor CO₂ monitor
True CO₂ and VOC indoors on a gentle E-Ink screen.
More about Insight →
Outdoor air quality meter
PM2.5, PM10 and noise outside, open-source firmware ready for Home Assistant.
More about Urban →Your data, your hardware, your choice
Read your data in three apps, or build your own open-source solution. With open protocols and open-source software, the sensor isn't locked to a single platform, cloud or vendor.
Altruist.local
The web app built into the device, on your Wi-Fi network. No servers involved.
Home Assistant
Integration with one of the most popular smart home platforms. Needs a local Home Assistant server.
sensors.social
Community map with extended analytics and history, built on Robonomics, an open-source cloud rather than a single vendor's.
MQTT and API for your own integrations.
Looking for an air quality sensor? Compare what matters
It's not just about counting sensors: it's how you use the data, where it goes and how much freedom you have after you buy. Altruist covers indoor and outdoor air, tracks noise and connects to Home Assistant. 3D-printed, replaceable enclosures and a repair kit let you repair and upgrade instead of replacing the whole device.
See the full comparison →
Explore our open-source environmental map — or build your own
Real sensor data from communities around the world: AQI, history, color-coded charts and outdoor noise. Add your sensor and join the community building a common-good air dataset.
Open the map →Rich air quality charts at your service
Track PM2.5, PM10, noise, temperature, humidity and atmospheric pressure in real time, or explore history by day, week or month on sensors.social. You choose in the settings whether your Altruist shares its data publicly.
What's inside Altruist Dual
What's in the box
- Altruist Urban: outdoor air monitor, USB-A to USB-C cable, wall mount (PLA), 2 screws, 2 double-sided tapes, user manual.
- Altruist Insight: indoor air quality monitor, USB-A to USB-C cable, SD card, mini screwdriver, user manual.
- Weather Protection Hood (if ordered): hood (ASA), wall mount (ASA), 2 screws, 2 double-sided tapes, user manual.
Colors and packaging may differ from the image shown.
Specifications
- Altruist Urban
- Sensors
- Nova SDS011 laser particle sensor (PM2.5, PM10); TDK ICS-43434 microphone (noise); Bosch BME280 (temperature, humidity, pressure)
- Display
- LED status; readings show on a paired Altruist Insight
- Connectivity
- Wi-Fi 2.4 GHz, ESP32-C6
- Integrations
- Home Assistant, MQTT, custom API, InfluxDB
- Power
- USB-C, 5 V
- Size, weight
- 125 × 49 × 164 mm, 214 g
- Operating range
- −25…+50 °C, 10–90 % RH, standing or wall mount
- Altruist Insight
- Sensors
- Sensirion SCD41 photoacoustic NDIR (CO₂); Bosch BME680 (temperature, humidity, pressure, VOC index)
- Display
- 4.2" E-Ink, 28 LEDs, 3 buttons
- Connectivity
- Wi-Fi 2.4 GHz, ESP32-C6; microSD for local logs
- Integrations
- Home Assistant, MQTT, custom API, InfluxDB
- Power
- USB-C, 5 V
- Size, weight
- 95 × 11 × 81 mm, 75 g
- Operating range
- 0…+40 °C, 10–90 % RH, indoors
Flexible manufacturing — more designs, less carbon footprint
We design, test and build our own devices in flexible small-scale production. Our goal is simple: bring more freedom and choice to everyday smart devices.
Altruist Dual
A set of two air quality meters: Altruist Urban for outdoors and Altruist Insight for indoors.
€320 on Cyberpunks.shop
Buy on Cyberpunks.shopWorldwide shipping · 2-year warranty in the EU · free returns