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70 lines
2.6 KiB
Markdown
70 lines
2.6 KiB
Markdown
---
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layout: page
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title: "Template Binary Sensor"
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description: "Instructions how to integrate Template binary sensors into Home Assistant."
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date: 2016-02-25 15:00
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sidebar: true
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comments: false
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sharing: true
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footer: true
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ha_category: Binary Sensor
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---
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The `template` platform supports sensors which breaks out the state and `state_attributes` from other entities.
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To enable Template sensors in your installation, add the following to your `configuration.yaml` file:
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```yaml
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# Example configuration.yaml entry
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binary_sensor:
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platform: template
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sensors:
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sun_up:
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value_template: {% raw %}'{{ states.sun.sun.attributes.elevation > 0}}'{% endraw %}
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friendly_name: 'Sun is up'
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```
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Configuration variables:
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- **sensors** array (*Required*): List of your sensors.
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- **friendly_name** (*Optional*): Name to use in the Frontend.
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- **sensor_class** (*Optional*): The [type/class](/components/binary_sensor/) of the sensor to set the icon in the frontend.
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- **value_template** (*Optional*): Defines a [template](/topics/templating/) to extract a value from the payload.
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- **warnings** (*Optional*): Turn off warnings (useful if the sensor is loaded before devices it depends on).
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- **entity_id** (*Optional*): Add a list of entity_ids so the sensor only reacts to state changes of these entities. This will reduce the number of times the sensor will try to update it's state.
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## {% linkable_title Examples %}
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In this section you find some real life examples of how to use this sensor.
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### {% linkable_title Sensor threshold %}
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This example indicates true if a sensor is above a given threshold. Assuming a sensor of `furnace` that provides a current reading for the fan motor, we can determine if the furnace is running by checking that it is over some threshold:
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```yaml
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sensor:
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platform: template
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sensors:
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furnace_on:
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value_template: {% raw %}{{ states.sensor.furnace.state > 2.5 }}{% endraw %}
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friendly_name: 'Furnace Running
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sensor_class: heat
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```
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### {% linkable_title Switch as sensor %}
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Some movement sensors and door/window sensors will apear as a switch. By using a template binary sensor, the switch can be displayed as a binary sensors. The original switch can then be hidden by [customizing.](/getting-started/customizing-devices/)
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```yaml
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binary_sensor:
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platform: template
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sensors:
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movement:
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value_template: {% raw %}"{{ states.switch.movement.state == 'on' }}"{% endraw %}
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sensor_class: motion
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door:
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value_template: {% raw %}"{{ states.switch.door.state == 'on' }}"{% endraw %}
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sensor_class: opening
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```
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