Duty Time
=========

.. seo::
    :description: Instructions for setting up a sensor that tracks the duty time of some object.
    :image: timer-play-outline.svg

The ``duty_time`` sensor allows you to track the total duty time of some object, for example, a light bulb, in seconds.
Able to calculate the last turn-on time when an optional sensor ``last_time`` is included in the configuration.

Supports boolean signal sources: ``binary_sensor`` or ``lambda`` that returns a boolean state of the tracked object.
As an alternative to controlling a component in automations, may be used the ``sensor.duty_time.start`` and ``sensor.duty_time.stop`` actions.


.. code-block:: yaml

    # Example configuration entry
    sensor:
      - platform: duty_time
        id: my_climate_work_time
        name: My Climate Work Time
        # Support logical sources (optional): 'binary_sensor'
        sensor: my_binary_sensor
        # ... EOR 'lambda'
        lambda: "return id(my_climate).mode != CLIMATE_MODE_OFF;"
        # Restore (optional, default: False)
        restore: false
        # Sensor for last turn-on time (optional)
        last_time:
          name: My Climate Last Turn-On Time


Configuration variables:
------------------------

- **sensor** (*Optional*, :ref:`config-id`): The ID of the ``binary_sensor`` to track the duty time. *May not be
  used with* ``lambda``.
- **lambda** (*Optional*, :ref:`lambda <config-lambda>`): Lambda that will be called in a loop to get the current
  state of the tracked object. *May not be used with* ``sensor``.
- **last_time** (*Optional*): Information of the last switch-on time sensor.
  All options from :ref:`Sensor <config-sensor>`.
- **restore** (*Optional*, boolean): Whether to store the intermediate result on the device so that the value can be
  restored upon power cycle or reboot.
  Warning: this option can wear out your flash. Defaults to ``false``.
- **update_interval** (*Optional*, :ref:`config-time`): The update interval. Defaults to ``60s``.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.


Automations
-----------

In addition to all basic :ref:`sensor automations <sensor-automations>`, the component supports the automations below.

.. _sensor-duty_time-start_action:

``sensor.duty_time.start`` Action
*********************************

This action starts/resume time tracking. In lambdas, you may use the ``start()`` method.

.. code-block:: yaml

    on_...:
      then:
        - sensor.duty_time.start: my_climate_work_time



.. _sensor-duty_time-stop_action:

``sensor.duty_time.stop`` Action
********************************

This action suspends time tracking. Causes the sensor to be updated, including the ``last_time`` sensor. In lambdas, you may use the ``stop()`` method.

.. code-block:: yaml

    on_...:
      then:
        - sensor.duty_time.stop: my_climate_work_time


.. _sensor-duty_time-reset_action:

``sensor.duty_time.reset`` Action
*********************************

This action resets the duty time counter. Causes a sensor update. Does not affect the ``last_time`` sensor. In lambdas, you may use the ``reset()`` method.

.. code-block:: yaml

    on_...:
      then:
        - sensor.duty_time.reset: my_climate_work_time


.. _sensor-duty_time-is_running_action:
.. _sensor-duty_time-is_not_running_action:

``sensor.duty_time.is_running`` / ``sensor.duty_time.is_not_running`` Condition
*******************************************************************************

This :ref:`Condition <config-condition>` checks if the ``duty_time`` counter is currently running (or suspended). In lambdas, you may use the ``is_running()`` method.

.. code-block:: yaml

    # In some trigger:
    on_...:
      if:
        condition:
          # Same syntax for 'is_not_running'
          sensor.duty_time.is_running: my_climate_work_time


See Also
--------

- :ref:`config-sensor`
- :ref:`config-lambda`
- :ref:`automation`
- :doc:`/components/binary_sensor/index`
- :apiref:`duty_time/duty_time_sensor.h`
- :ghedit:`Edit`