home-assistant.io/source/_components/sensor.serial_pm.markdown

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Particulate matter sensors measure the amount of very small particles in the air. A short introduction how these sensors work can be found on Open Home Automation.

Cheap LED based sensors usually use a GPIO interface that is hard to attach to computers. However, there are a lot of laser LED based sensors on the market that use a serial interface and can be connected to your Home Assistant system easily with an USB to serial converter.

At this time, the following sensors are supported:

• oneair,s3
• novafitness,sds021
• novafitness,sds011
• plantower,pms1003
• plantower,pms5003
• plantower,pms7003
• plantower,pms2003
• plantower,pms3003

To use your PM sensor in your installation, add the following to your configuration.yaml file:

sensor:
  - platform: serial_pm
    serial_device: /dev/tty.SLAB_USBtoUART
    name: Nova
    brand: novafitness,sds011

• serial_device (Required): The serial port to use. On *nix systems, it can often be identified by $ ls /dev/tty*
• name (Optional): The name displayed in the frontend.
• brand (Required): Manufacturer and type of the sensor.