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Add min/max sensor docs (#1232)
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source/_components/sensor.min_max.markdown
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source/_components/sensor.min_max.markdown
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---
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layout: page
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title: "Min/max Sensor"
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description: "Instructions how to integrate min/max sensors into Home Assistant."
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date: 2016-10-13 12:00
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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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logo: home-assistant.png
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ha_category: Sensor
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ha_iot_class: "Local Polling"
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ha_release: "0.31"
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---
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The `min_max` sensor platform is consuming the state from other sensors and determine the minimum, maximum, and the mean of the collected states. The sensor will always show you the highest/lowest value which was received from your all monitored sensors. If you have spikes in your values, it's recommanded filter/equalize your values with a [statistics sensor](/components/sensor.statistics/) first.
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It's an alternative to the [template sensor](/components/sensor.template/)'s `value_template:` to get the average of multiple sensors.
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```yaml
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{% raw %}{{ ((float(states.sensor.kitchen_temperature.state) +
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float(states.sensor.living_room_temperature.state) +
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float(states.sensor.office_temperature.state)) / 3) | round(2)
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}}{% endraw %}
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```
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To enable the minimum/maximum sensor, add the following lines to your `configuration.yaml`:
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```yaml
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# Example configuration.yaml entry
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sensor:
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- platform: min_max
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entity_ids:
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- sensor.kitchen_temperature
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- sensor.living_room_temperature
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- sensor.office_temperature
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```
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Configuration variables:
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- **entity_ids** (*Required*): At least two entities to monitor
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- **type** (*Optional*): The type of sensor. Defaults to `max`.
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- **name** (*Optional*): Name of the sensor to use in the frontend.
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