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* Document update frequency Documented that the random number changes every 30 seconds according to http://fabian-affolter.ch/blog/random-sensor/ * Learned the source of the 30s polling frequency
37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
---
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layout: page
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title: "Random Sensor"
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description: "Instructions how to integrate random number sensors into Home Assistant."
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date: 2016-10-30 12:10
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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: 0.32
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---
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The `random` sensor platform is creating random sensor values (integers) out of a given range. This can be useful if you want to test automation rules. It generates a new value every time it is polled.
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To enable the random 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: random
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```
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Configuration variables:
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- **name** (*Optional*): Name of the sensor to use in the frontend. Defaults to `Random Sensor`.
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- **minimum** (*Optional*): Lower limit for the values. Defaults to `0`.
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- **maximum** (*Optional*): Upper limit for the values. Defaults to `20`.
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- **unit_of_measurement** (*Optional*): Defines the units of measurement of the sensor, if any.
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See the [entity component options][entity-docs] to control how often the main component polls the random sensor. The default is 30 seconds.
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[entity-docs]: https://home-assistant.io/docs/configuration/platform_options/
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