home-assistant.io/source/_cookbook/notify_if_over_threshold.markdown

layout, title, description, date, sidebar, comments, sharing, footer, ha_category

layout	title	description	date	sidebar	comments	sharing	footer	ha_category
page	Send notification based on sensor	Basic example of how to send a templated notification if a sensor is over a given threshold	2016-02-25 15:00	true	false	true	true	Automation Examples

The following example sends a notification via pushbullet if a sensor is over a critical value:

notify me:
  platform: pushbullet
  api_key: "API_KEY_HERE"
  name: mypushbullet

automation:
  - alias: FanOn
    trigger:
      platform: numeric_state
      entity_id: sensor.furnace
      above: 2
    action:
      service: notify.mypushbullet
      data_template:
        title: "Furnace fan is running"
        message: "Fan running because current is {% raw %}{{ states.sensor.furnace.state }}{% endraw %} amps"

If you also want a notification when it drops back down below that limit, you could add this as well:

  - alias: FanOff
    trigger:
      platform: numeric_state
      entity_id: sensor.furnace
      below: 2
    action:
      service: notify.mypushbullet
      data_template:
        title: "Furnace fan is stopped"
        message: "Fan stopped because current is {% raw %}{{ states.sensor.furnace.state }}{% endraw %} amps"