Apollo AIR-1 Air Quality Sensor

The Apollo AIR-1 is a compact, expandable, and fully featured air quality sensor, specifically designed for Home Assistant. Thanks to Wi-Fi and ESPHome, the sensor operates entirely locally: your data remains private, no cloud or subscription is required, and you have complete control over your own data and automations.

Available variants:

• Apollo AIR-1 Basic: Measures particulate matter (PM1, PM2.5, PM4, PM10), VOCs, NOx, air pressure, temperature, and humidity.
• Apollo AIR-1 with CO2: Includes a high-quality NDIR CO2 sensor for accurate carbon dioxide measurement.
• Apollo AIR-1 with CO2 & GAS: Expanded with an additional gas sensor (MiCS-4514) for detecting carbon monoxide (CO), ethanol, hydrogen (H2), nitrogen dioxide (NO2), ammonia (NH3) and methane (CH4).

Key Features:

• Extensive measurements:
  • Fine dust: PM1, PM2.5, PM4, PM10 (SEN55 sensor, lifespan 10 years)
  • VOC (volatile organic compounds) and NOx
  • Air pressure (DPS310)
  • Temperature and humidity (note: slight deviation possible due to internal heat)
  • Optional: CO2 (SCD40 NDIR sensor)
  • Optional: 6 additional gases (MiCS-4514)
• Completely local & privacy-friendly: no cloud, no subscription, no external access required.
• Seamless Home Assistant integration: connect directly via ESPHome, easy to customize and expand.
• Open-source & community-driven: software and CAD files are freely available, ideal for DIY and tinker projects.
• RGB LEDs for notifications: Programmable LEDs provide immediate visual feedback, for example in case of poor air quality.
• Bluetooth Tracking: Ability to locate Bluetooth devices in your home (MAC address needed, YAML configuration required).
• Compact & stylish: only 61 x 61 x 30 mm, fits into any interior.

Applications:

• Always have insight into the air quality in your home, office, workshop or bedroom.
• Automatic ventilation or air purification based on real-time measurements.
• Detection of harmful substances, particulate matter, CO2 and various gases.
• Full control and automation in Home Assistant, without dependency on external services.

NB:

• The optional gas sensor is intended for indicative measurements and not for official safety applications.
• Due to heat from the electronics, the temperature measurement may deviate by 2-6°C; this is known and can be compensated for in Home Assistant.
• USB-C power and cable required (not included).

Why choose the Apollo AIR-1?

The AIR-1 is the ideal choice for anyone who wants to combine privacy, flexibility, and comprehensive air quality data with the power of Home Assistant. Thanks to its modular design and open-source nature, you can customize the sensor to your needs, and future expansions are possible via the expansion connector.

With the Apollo AIR-1, you get one of the most complete, reliable, and expandable air quality sensors for Home Assistant – local, privacy-friendly, and fully customizable.