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What’s inside the AirGradient ONE?


  • Mainboard
  • ESP32-C3-MINI
  • LED Bar
  • 1.3” (128x64px) OLED display 
  • PM sensor module (Plantower PMS5003)
  • CO2 sensor module (SenseAir S8/S88)
  • VOC & NOx sensor module (Sensirion SGP41)
  • Temperature & Humidity sensor module (Sensirion SHT4x)

What’s Inside the AirGradient ONE?


Here’s a quick overview of the main parts inside the device:

See this assembly video, for more insight: Assembling the AirGradient ONE Kit

ONE - What’s inside the device_3 (Custom).png

1. Open ONE Mainboard

The mainboard includes:

  • An ESP32-C3-MINI microcontroller that handles processing, Wi-Fi connectivity, and data transmission
  • Connectors and pin sockets for all sensor modules
  • Power management and onboard circuitry

This board coordinates sensor readings and sends data to the AirGradient dashboard or your own integrations.

2. RGB LED Bar

The pre-mounted 11 RGB LEDs display air quality/device status. It can be switched off.

3. 1.3" OLED Display (128x64px)

The pre-mounted 1.3" OLED display with 128x64px resolution displays real-time air quality measurements and device status. It can be switched off.

4. Plantower PMS5003 PM Sensor

This pre-mounted sensor measures:

  • PM1
  • PM2.5
  • PM10

5. SenseAir S8 / S88 CO₂ Sensor Module

This NDIR (Non-Dispersive Infrared) sensor measures carbon dioxide (CO₂) levels.

6. SGP41 TVOC / NOx Sensor Module

This sensor measures:

  • TVOC (Total Volatile Organic Compounds)
  • NOx (Nitrogen Oxides index)

7. SHT40 Temperature & Humidity Sensor Module

This sensor measures:

  • Temperature
  • Relative humidity

Modular by Design

One of the key advantages of the AirGradient ONE is its modular design.

This means:

  • Sensors can be replaced individually if needed
  • Maintenance is easier
  • Future upgrades are simpler

This open and repairable approach helps extend the life of the monitor and supports long-term reliability.

 

 

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