AIR-1 Wi-Fi Air Quality Sensor with SEN55 Particulate Monitoring, ESPHome, RGB Pixels and CO2 or Gas Sensor Options

AIR-1 connects to Home Assistant over Wi-Fi through ESPHome for local air quality monitoring. Its SEN55 sensor measures particulate matter, VOC, NOx, temperature and humidity, while optional CO2 and gas sensors extend the available readings.

Key Features

• Monitor PM1, PM2.5, PM4 and PM10 particulate matter alongside VOC and NOx readings.
• Local control through ESPHome requires no cloud service or subscription.
• Integration options include Home Assistant, Homey, Hubitat and HomeSeer.
• Choose the base configuration, add an SCD40 CO2 sensor, or choose both CO2 and MiCS-4514 gas sensors.
• RGB pixels can display configurable color-coded notifications.
• Bluetooth tracking is available through YAML configuration on the ESP32-C3-Mini controller.
• Temperature readings may need an offset to account for heat from the controller.

Specifications

• Model: AIR-1
• Core sensor: SEN55
• Core readings: PM1, PM2.5, PM4, PM10, VOC, NOx, temperature and humidity
• Optional CO2 sensor: SCD40, according to selected configuration
• Optional gas sensor: MiCS-4514, on the configuration with both added sensors
• Controller: ESP32-C3-Mini
• Connection: Wi-Fi; ESPHome
• Power connection: USB-C, used with a standard wall adapter
• Dimensions: 61 × 61 × 30mm
• Included: assembled sensor with case and Apollo sticker

The optional gas sensor is intended for gas indication; its methane reading can respond to other gases. AIR-1 is not intended for gas or CO2 safety monitoring.