AIR-1 Air Quality Sensor for Home Assistant

The Apollo Automation AIR-1 is the most compact, feature-rich, affordable, and expandable air sensor for Home Assistant. Utilising WiFi and ESPHome, it is locally controlled with no subscription or cloud required.

Key features include monitoring PM levels (dust, pollen), VOCs, CO2, temperature, humidity, and even gas levels (optional). The device also integrates RGB LEDs for notifications and Bluetooth tracking for added automation.

Powered via USB-C (using a standard USB power supply and USB-C cable – not included), the device uses WiFi to connect to ESPHome on your Home Assistant install. The AIR-1 measures only 61mm x 61mm x 30mm and has an aesthetic design to blend in.

We proudly offer the software and CAD drawings to the community, encouraging all to modify and improve upon them. For more information, visit our GitHub or wiki. We’re eager to see the innovative adaptations you come up with. Join our Discord community to share your unique remakes or to engage in discussions about future products.

Note: There is a temperature offset needed due to heat buildup from the ESP32-C3.We are still evaluating it, but it is between 2 and 6 degrees C.

Sensors & Specifications

• PM1, PM2.5, PM4, PM10, VOC, NOx, Temperature, Humidity
  
  • Model: SEN55
  • There is a temperature offset needed due to heat buildup from the ESP32-C3.We are still evaluating it, but it is between 2 and 6 degrees C.
  • Many air quality measurements from a very reputable manufacturer. The sensor has a 10-year lifespan at continuous use (Most PM sensors only have 3 years), meaning you can have very short update intervals:
  • Monitor 3d printers
  • Turn your air purifier on when air quality becomes unhealthy
  • Detect new paint fumes
• Gas (Optional variant) – CO (Carbon Monoxide), C2H5OH (Ethanol), H2, NO2, NH3 (Ammonia), CH4 (Methane)
  • Model: MiCS-4514 (DFRobot)
  • Monitor the individual gas percentages in your air with this optional add-on.
  • Our beta test group has noticed the methane reading will spike when exposed to high amounts of other gasses. We all believe this is manageable for the vast amount of automations still, but wanted to let you know. It is much more an ‘exists/doesn’t exist’ type of gas monitoring vs the actual PPM readout, it will read 0ppm in normal air.
  • This device does not meet the requirements for gas safety monitoring per the NBIC, NFPA, or IFC
• CO2
  • This add-on brings a CO2 sensor to the package, which comes pre-calibrated and ready to use. (This device does not meet the requirements for CO2 safety monitoring per the NBIC, NFPA, or IFC)
  • Get alerts to open a window or automate your HVAC fan to run when CO2 levels are high.
• Barometric Pressure
  • This pressure sensor feeds into the SCD40 (CO2) for more accurate readings
• Bluetooth Tracker
  • Model: ESP32-C3-Mini
  • Track Bluetooth devices in your house, letting you know which devices are closest to the sensor.
  • You will need to know the MAC of the Bluetooth devices you want to track.
  • Find your phone if you left it in the office or the bedroom. Know who just walked into the room. Track a beacon attached to your dog’s collar.
• RGB LEDs
  • Uses colour-coded alerts for various home scenarios
  • Flash red if the air quality is unhealthy
  • Flash green on trash night
  • Flash blue when it’s treat time for your pup
• Power And Sensor Expansion Connector
  • A connector that’ll allow future sensors and power methods.
  • A few expansion boards are in development currently but no set release date. Let us know what you’d like to see on the expansion slots.

Use Cases

• The SEN55 particulate sensor is great for telling you about dust, pollen, and other particles in your air. Want to know if you should turn in your HVAC fan to filter your home air? Doing woodworking in the garage? This will let you know when you might need to turn on a filter.
• The CO2 sensor is very eye opening. Many people do not know the air in their office or bedroom reaches CO2 levels that have an affect on you. From poor sleep at night, drowsiness in the office, and brain fog can all be caused by high CO2. This sensor will let you know if your levels are getting too high and you need to turn on the air circulation or open a window.
• The RGB LEDS are great for notifications. Trash night? Turn the LED green. Mail in the mailbox? Turn the LED blue. Air quality approaching bad levels? Turn red.

Community Reviews

• The Bearded Tech Guy AIR-1 Review
• Smart Home Scene AIR-1 Review
• Simon Says Home Assistant AIR-1 Review
• BeardedTinker AIR-1 Review
• Hands On Katie AIR-1 Review
• MostlyChris AIR-1 Review
• Michael Leen AIR-1 Review

Resources

Documentation

• Apollo Automation AIR-1 Wiki
• AIR-1 GitHub Repo

Datasheets

• SEN55
• MiCS-4514
• SCD40
• DPS310
• ESP32-C3-Mini

3D Print Files

• 3D Case File
• Apollo AIR-1 frame
• Apollo Automation Air-1 Wall Mount
• Apollo Automation AIR-1 Case Remix
• Apollo Air-1 custom wall mount
• Apollo Air-1 holder for Skadis
• Apollo Automation AIR-1 Case Redux Part II

Apollo Automation Social

• Discord
• Twitter
• Facebook
• Instagram
• TikTok

Package Contents

• 1x Assembled AIR-1 sensor with 3D-printed case
  • Select a variant before adding to cart – either the CO2 version, or CO2 + Gas sensors

USB-C cable/power supply not included