Automatically detects any moisture (leak) sensor in Home Assistant — no need to manually select sensors. Sends customizable mobile notifications with your own title and message. Optional features include auto-clear notifications when the sensor goes dry and repeating alarms until cleared.

leak-detector-notifier.yaml

blueprint:
  name: Leak detection & notifier (Custom text + option to repeat alarm)
  description: >
    Sends notification when moisture is detected.
    Optional auto-clear notification and repeating alarm until cleared.
  domain: automation

  input:
    notify_device:
      name: Notify device
      selector:
        device:
          integration: mobile_app

    notification_title:
      name: Leak notification title
      default: "⚠️💧 Leak detected!"
      selector:
        text:

    notification_message:
      name: Leak notification message
      default: "🚨 {{ sensor_name }} has detected water!"
      selector:
        text:

    clear_enabled:
      name: Enable auto-clear notification
      description: Send notification when sensor becomes dry
      default: false
      selector:
        boolean:

    clear_title:
      name: Clear notification title
      default: "✅ Leak cleared"
      selector:
        text:

    clear_message:
      name: Clear notification message
      default: "✔️ {{ sensor_name }} is dry again."
      selector:
        text:

    repeat_enabled:
      name: Enable repeating alarm
      description: Repeat notification until leak is cleared
      default: false
      selector:
        boolean:

    repeat_interval:
      name: Repeat interval (minutes)
      default: 5
      selector:
        number:
          min: 1
          max: 60
          unit_of_measurement: minutes
          mode: box

    script_to_run:
      name: Optional script to run
      default: []
      selector:
        entity:
          domain: script

trigger:
  - platform: event
    event_type: state_changed

condition:
  - condition: template
    value_template: >
      {{ trigger.event.data.new_state is not none
         and trigger.event.data.new_state.attributes.device_class == "moisture" }}

action:
  - variables:
      sensor_name: "{{ trigger.event.data.new_state.attributes.friendly_name }}"
      new_state: "{{ trigger.event.data.new_state.state }}"
      leak_title: !input notification_title
      leak_message: !input notification_message
      clear_title_var: !input clear_title
      clear_message_var: !input clear_message
      clear_enabled_var: !input clear_enabled
      repeat_enabled_var: !input repeat_enabled
      repeat_interval_var: !input repeat_interval
      selected_script: !input script_to_run

  - choose:

      # =====================
      # LEAK DETECTED
      # =====================
      - conditions:
          - condition: template
            value_template: "{{ new_state == 'on' }}"
        sequence:

          # Initial notification
          - domain: mobile_app
            type: notify
            device_id: !input notify_device
            title: "{{ leak_title }}"
            message: "{{ leak_message }}"
            data:
              icon: "mdi:water-alert"

          # Optional script
          - choose:
              - conditions:
                  - condition: template
                    value_template: "{{ selected_script != [] }}"
                sequence:
                  - service: script.turn_on
                    target:
                      entity_id: "{{ selected_script }}"

          # Optional repeating alarm
          - choose:
              - conditions:
                  - condition: template
                    value_template: "{{ repeat_enabled_var }}"
                sequence:
                  - repeat:
                      while:
                        - condition: template
                          value_template: >
                            {{ is_state(trigger.event.data.entity_id, 'on') }}
                      sequence:
                        - delay:
                            minutes: "{{ repeat_interval_var }}"
                        - domain: mobile_app
                          type: notify
                          device_id: !input notify_device
                          title: "🔁 Reminder"
                          message: "{{ leak_message }}"
                          data:
                            icon: "mdi:water-alert"

      # =====================
      # LEAK CLEARED
      # =====================
      - conditions:
          - condition: template
            value_template: >
              {{ new_state == 'off' and clear_enabled_var }}
        sequence:
          - domain: mobile_app
            type: notify
            device_id: !input notify_device
            title: "{{ clear_title_var }}"
            message: "{{ clear_message_var }}"
            data:
              icon: "mdi:water-check"

mode: restart