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

title, description, ha_category

title	description	ha_category
Examples for flashing lights	Automation examples for flashing lights in case of an alarm.	Automation Examples

Flashing lights triggered by an alarm

For flashing regular lights in case an alarm is triggered.

# AlmAct1 - switch to activate the alarm in Room1
# AlmSnd1 - switch for a buzzer

automation:
- alias: "Alarm_PIR_Room1"
  trigger:
    platform: state
    entity_id: binary_sensor.PIR1
    to: "on"
  condition:
    - condition: state
      entity_id: switch.AlmAct1
      state: "on"
    - condition: state
      entity_id: script.alarm_room1
      state: "off"
  action:
    # start alarm on movement if alarm activated
    # and the alarm is not triggered
    service: script.turn_on
    target:
      entity_id: script.alarm_room1

- alias: "flash_room1_start"
  trigger:
    platform: state
    entity_id: switch.AlmSnd1
    to: "on"
  action:
    service: script.turn_on
    target:
      entity_id: script.flash_room1

- alias: "flash_room1_stop"
  trigger:
    platform: state
    entity_id: switch.REL1
    to: "off"
  condition:
    condition: state
    entity_id: switch.AlmSnd1
    state: "off"
  action:
    service: script.turn_off
    target:
      entity_id: script.flash_room1

script:
  alarm_room1:
    alias: "Alarm room1"
    sequence:
      - alias: "Alarm Room1 Start"
        service: homeassistant.turn_on
        target:
          entity_id: switch.AlmSnd1
      - alias: "Set Ack Room1"
        service: homeassistant.turn_on
        target:
          entity_id: input_boolean.ack1
      - alias: "email_Room1"
        service: notify.email
        data:
          message: "Movement alarm in Room1"
      - delay:
          # time interval for alarm sound and light flashing
          seconds: 60
      - alias: "Alarm Room1 Stop"
        service: homeassistant.turn_off
        target:
          entity_id: switch.AlmSnd1

  flash_room1:
    alias: "Flash Room1 On"
    sequence:
      - alias: "Light Room1 On"
        service: homeassistant.turn_on
        target:
          entity_id: switch.REL1
      - delay:
          # time for flash light on
          seconds: 1
      - alias: "Light Room1 Off"
        service: homeassistant.turn_off
        target:
          entity_id: switch.REL1
      - alias: "loop_room1"
        service: script.turn_on
        target:
          entity_id: script.flash_loop

  flash_loop:
    alias: "Flash loop"
    sequence:
      - delay:
          # time for flash light off
          seconds: 1
      - alias: "loop_room1"
        service: script.turn_on
        target:
          entity_id: script.flash_room1