Sensor

sensor:
  - platform: ... # [!code highlight]
    name: 'My Sensor'
    id: ram_usage
    icon: mdi:memory
    device_class: data_size
    state_class: measurement
    unit_of_measurement: '%'
    accuracy_decimals: 2

Attributes

Common attributes are documented in Common Component Properties.

Property	Description	Example
`device_class`	Home Assistant device classification for the sensor value.	`data_size`
`state_class`	Home Assistant state class (for example `measurement`).	`measurement`
`unit_of_measurement`	Unit shown in user interfaces (for example `%`, `°C`, `Pa`).	`%`
`accuracy_decimals`	Number of decimals reported for the sensor value.	`2`

Supported Filters

Filter	Description
`round`	Rounds numeric sensor values to the configured decimal precision.

Supported Platforms

Platform	Notes
Shell	Reads sensor values from command output.
BME280	Exposes temperature, pressure, and humidity as sensor components.
Illuminance	Exposes ambient light as a sensor component.

For platform-specific configuration options, use the linked platform pages.

Similar to ESPHome: Sensor