Everything you need to go further.
- Device setup and configuration
- Firmware features and updates
AirDot uses a bright round display that makes indoor air quality easy to read at a glance.
- 2.1 inch round IPS TFT display
- 480 x 480 pixel resolution
- 1000 nits typical brightness
- 1000:1 typical contrast ratio
- 85-degree viewing angle in every direction
- Anti-glare optical finish
AirDot is built around the Sensirion SEN66 platform for high-quality indoor air measurement.
- Measures CO2, PM1, PM2.5, PM4, PM10, VOC Index and NOx Index
- Measures temperature and relative humidity
- Fresh sensor readings every second
- CO2 range: 0 to 40,000 ppm
- CO2 accuracy: +/-(50 ppm + 2.5% of reading) from 400 to 1,000 ppm
- Sensor module lifetime specified at more than 10 years
- Low acoustic emission: below 24 dB(A) at 0.2 m
AirDot shows CO2 buildup clearly, helping users understand when a room needs fresh air.
- CO2 shown in ppm
- Typical CO2 response time: 10 seconds
- CO2 repeatability: typically +/-10 ppm
- Automatic self-calibration supported by the sensor
- Clear guidance when ventilation is recommended
- Useful for offices, bedrooms, classrooms and living spaces
- Best performance depends on normal indoor use and fresh-air exposure
AirDot tracks multiple particle sizes to reveal dust, smoke and pollution events indoors.
- PM1, PM2.5, PM4 and PM10 measurements
- Mass concentration range: 0 to 1,000 ug/m3
- PM1 and PM2.5 precision: +/-(5 ug/m3 + 5% of reading) from 0 to 100 ug/m3
- PM1 and PM2.5 precision: +/-10% of reading from 100 to 1,000 ug/m3
- Helps reveal cooking, smoke, candles, cleaning and traffic pollution
- PM4 and PM10 are calculated from the measured particle distribution
AirDot adds VOC and NOx Index readings for indoor gas and pollution trends beyond CO2.
- VOC Index range: 1 to 500
- NOx Index range: 1 to 500
- VOC Index repeatability: below +/-5 index points or +/-5% of reading
- NOx Index repeatability: below +/-10 index points or +/-10% of reading
- Index values show trends, not absolute gas concentration
AirDot combines air quality with room climate values, so changes are easier to understand.
- Temperature measurement
- Relative humidity measurement
- Barometric pressure measurement
- Ambient light measurement
- Temperature accuracy: typically +/-0.45 C
- Humidity accuracy: typically +/-4.5% RH
- Pressure range: 300 to 1,100 hPa
AirDot adapts the screen to the room, making it practical for day, evening and night use.
- Dedicated LTR-303ALS ambient light sensor
- Ambient light range: 0.01 lux to 64k lux
- Automatic brightness based on room light
- Manual brightness levels: low, medium and high
- Firmware brightness levels: 35%, 70% and 100%
- Optional night screen-off schedule
AirDot shows current values and recent trends, so users can see spikes and recovery over time.
- 15-minute visible graph history per sensor
- 24-hour min/max statistics per sensor
- Dedicated graphs for PM1, PM2.5, PM4, PM10, CO2, VOC and NOx
- Dedicated pages for temperature, humidity, pressure and light
- Current value shown with unit
- Coloured graph lines highlight high-risk values
- Graph ranges are tuned per metric in firmware
AirDot turns raw measurements into clear status levels and practical on-screen guidance.
- Status levels: Good, Moderate, Poor, Unhealthy and Critical
- Action text such as "No action needed" and "Ventilate the room"
- Overall status based on PM2.5, PM10, VOC, NOx and CO2
AirDot supports multiple air quality profiles, so classification can match the user's region or preference.
- Global WHO/EEA Strict
- Europe EEA
- North America US EPA 2024
- UK DAQI 5
- India NAQI 5
- China CN AQI 5
- Australia NSW 1H
AirDot can automatically focus the display on the sensor that needs attention most.
- Optional hazard focus mode
- Covers PM2.5, PM10, CO2, VOC and NOx
- Automatically opens the relevant graph page
- Wakes the screen during critical air quality events
- Rotates between active high-risk metrics every 3 seconds
- Returns to the previous page after values recover
- Button press snoozes hazard focus for 30 seconds
AirDot can add a subtle sound cue when air quality reaches a critical level.
- Built-in buzzer
- Optional audio alerts in setup
- 2700 Hz alert tone
- Critical air quality chirp every 3 seconds while active
- Button press snoozes critical sound alerts for 30 seconds
- Home Assistant display alerts can also trigger a sound
- Sound alerts can stay disabled for silent rooms
AirDot can also work as a useful room display for time and local weather.
- Automatic time sync with SNTP
- Manual time setting available
- 12-hour and 24-hour time formats
- Local date display
- Outdoor temperature, humidity and pressure
- Weather condition text
- Weather data refreshes every 15 minutes when available
AirDot is configured locally and controlled with one button for simple daily use.
- Local setup page
- No app account required
- First setup starts on the AirDot display
- Connect to the temporary AirDot Wi-Fi network
- Configure Wi-Fi, language, units, time, weather, display and alerts
- Supported languages: English, German, Dutch and French
- One-button control for changing screens, opening setup and dismissing alerts
AirDot uses ESP32-S3 hardware and ESPHome firmware for connectivity, smart home data and wireless updates.
- ESP32-S3 dual-core 32-bit LX7 processor
- 2.4 GHz Wi-Fi for setup, time sync, weather, Home Assistant, MQTT and OTA updates
- 16 MB flash memory in the current firmware configuration
- Octal PSRAM for smooth display handling
- Home Assistant discovery and ESPHome native API support
- MQTT support with configurable broker, credentials and topic prefix
- ESPHome over-the-air firmware updates with safe mode recovery
Powered via USB-C with a 5V 2Ah input
- Built for always-on operation