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SFA40 Formaldehyde Sensor

The sfa40 sensor platform allows you to use your Sensirion SFA40 formaldehyde (datasheet) sensor with ESPHome. The sensor also reports temperature and relative humidity. The I²C Bus is required to be set up in your configuration for this sensor to work.

SFA40 formaldehyde sensor 
# Example configuration entry
sensor:
  - platform: sfa40
    formaldehyde:
      name: "Formaldehyde"
    temperature:
      name: "Temperature"
    humidity:
      name: "Humidity"

Configuration Variables

Section titled “Configuration Variables”

  • formaldehyde (Optional): The information for the formaldehyde concentration sensor. All options from Sensor.

  • temperature (Optional): The information for the temperature sensor. All options from Sensor.

  • humidity (Optional): The information for the relative humidity sensor. All options from Sensor.

  • address (Optional, int): Manually specify the I²C address of the sensor. Defaults to 0x5D.

  • wait_for_ready (Optional, boolean): If enabled, formaldehyde readings are not published while the sensor is warming up. Readings are also not published when the sensor reports an out-of-spec condition, regardless of this setting. Defaults to true.

  • update_interval (Optional, Time): The interval to check the sensor. Defaults to 60s.

See Also

Section titled “See Also”