esphome-docs/components/number/template.rst
2024-08-14 02:34:33 +00:00

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Template Number
===============
.. seo::
:description: Instructions for setting up template numbers with ESPHome.
:image: description.svg
The ``template`` number platform allows you to create a number with templated values
using :ref:`lambdas <config-lambda>`.
.. code-block:: yaml
# Example configuration entry
number:
- platform: template
name: "Template number"
optimistic: true
min_value: 0
max_value: 100
step: 1
Configuration variables:
------------------------
- **min_value** (**Required**, float): The minimum value this number can be.
- **max_value** (**Required**, float): The maximum value this number can be.
- **step** (**Required**, float): The granularity with which the number can be set.
- **lambda** (*Optional*, :ref:`lambda <config-lambda>`):
Lambda to be evaluated every update interval to get the current value of the number.
- **set_action** (*Optional*, :ref:`Action <config-action>`): The action that should
be performed when the remote (like Home Assistant's frontend) requests to set the
number value. The new value is available to lambdas in the ``x`` variable.
- **update_interval** (*Optional*, :ref:`config-time`): The interval on which to update the number
by executing the ``lambda``. Defaults to ``60s``.
- **optimistic** (*Optional*, boolean): Whether to operate in optimistic mode - when in this mode,
any command sent to the template number will immediately update the reported state.
Cannot be used with ``lambda``. Defaults to ``false``.
- **restore_value** (*Optional*, boolean): Saves and loads the state to RTC/Flash.
Cannot be used with ``lambda``. Defaults to ``false``.
- **initial_value** (*Optional*, float): The value to set the state to on setup if not
restored with ``restore_value``.
Cannot be used with ``lambda``. Defaults to ``min_value``.
- All other options from :ref:`Number <config-number>`.
``number.set`` Action
---------------------
You can also set the number for the template number from elsewhere in your YAML file
with the :ref:`number-set_action`.
See Also
--------
- :ref:`automation`
- :apiref:`template/number/template_number.h`
- :ghedit:`Edit`