home-assistant.io/source/_integrations/threshold.markdown

title	description	ha_category	ha_iot_class	ha_release	ha_quality_scale	ha_domain	ha_config_flow	ha_platforms	ha_integration_type
Threshold	Instructions on how to integrate threshold binary sensors into Home Assistant.	Binary Sensor Helper Utility	Local Polling	0.34	internal	threshold	true	binary_sensor	helper

The threshold integration observes the state of another sensor. If the value is below or higher than the given threshold, then the state of the threshold sensor is changed. It also supports a range if both the upper and lower limits are given.

If the sensor is configured with no hysteresis and the sensor value is equal to the threshold, the sensor is turned off since it is not upper or lower with respect to the threshold.

{% include integrations/config_flow.md %} {% configuration_basic %} Name: description: The name the sensor should have. You can change it again later. Input sensor: description: The entity providing numeric readings to apply the threshold on. Hysteresis: description: The distance the observed value must be from the threshold before the state is changed. Lower limit: description: The lower threshold which the observed value is compared against. Upper limit: description: The upper threshold which the observed value is compared against. {% endconfiguration_basic %}

YAML Configuration

Alternatively, this integration can be configured and set up manually via YAML instead. To enable the Integration sensor in your installation, add the following to your configuration.yaml file:

# Example configuration.yaml entry
binary_sensor:
  - platform: threshold
    entity_id: sensor.random
    lower: 20

{% configuration %} entity_id: description: "The entity to monitor. Only sensors are supported." required: true type: string device_class: description: Sets the class of the device, changing the device state and icon that is displayed on the frontend. required: false type: string lower: description: The lower threshold which the observed value is compared against. required: false type: float upper: description: The upper threshold which the observed value is compared against. required: false type: float hysteresis: description: The distance the observed value must be from the threshold before the state is changed. required: false type: float default: 0.0 name: description: Name of the sensor to use in the frontend. required: false type: string default: Threshold {% endconfiguration %}

Examples

Is the temperature rising or falling

The hysteresis parameter can be used in this use-case to avoid frequent state changes around the maximum or the minimum of a temperature curve. We also have to utilize the derivative sensor for this use-case:

sensor:  
  - platform: derivative # will be positive for rising temperatures and negative for falling temperatures
    source: sensor.temperature
    unit_time: min
    name: temperature derivative
    time_window: 00:05:00
binary_sensor:
  - platform: threshold # will switch state not at 0°C/min but 0.1°C/min or -0.1°C/min depending on the current state of the sensor, respectively
    entity_id: sensor.temperature_derivative
    upper: 0
    hysteresis: 0.1 # sensor 
    name: temperature rising