:description:Instructions for setting up SCD4X CO₂ Temperature and Relative Humidity Sensor
:image:scd4x.jpg
The ``scd4x`` sensor platform allows you to use your Sensirion SCD4X CO₂
(`datasheet <https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/9.5_CO2/Sensirion_CO2_Sensors_SCD4x_Datasheet.pdf>`__) sensors with ESPHome.
The :ref:`I²C Bus <i2c>` is required to be set up in your configuration for this sensor to work.
..figure:: images/scd4x.jpg
:align:center
:width:80.0%
..code-block:: yaml
# Example configuration entry
sensor:
- platform: scd4x
co2:
name: "Workshop CO2"
temperature:
name: "Workshop Temperature"
humidity:
name: "Workshop Humidity"
Configuration variables:
------------------------
-**co2** (*Optional*): The information for the CO₂ sensor.
-**name** (**Required**, string): The name for the CO₂eq sensor.
-**id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
-**temperature** (*Optional*): The information for the Temperature sensor.
-**name** (**Required**, string): The name for the temperature sensor.
-**id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
-**humidity** (*Optional*): The information for the Humidity sensor.
-**name** (**Required**, string): The name for the humidity sensor.
-**id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
-**temperature_offset** (*Optional*, float): The temperature offset can depend
on various factors such as the SCD4x measurement mode, self-heating of close
components, the ambient temperature and air flow. This variable allows the
compensation of those effects by setting a temperature offset. Defaults to
