Sends notification on low battery for SonOff DW2-Wifi

sonoff-dw2wifi-lowbattery-notification.yaml

blueprint:
  name: Sonoff DW2-Wifi low battery notification
  description: Sends notification on low battery for DW2-Wifi
  domain: automation
  input:
    door_sensor:
      name: Door sensor
      selector:
        entity:
          domain: binary_sensor
          device_class: door
    threshold:
      name: Battery warning level threshold
      description: Battery voltage below threshold are assumed to be low-battery.
      default: 2.5
      selector:
        number:
          min: 2.0
          max: 3.0
          unit_of_measurement: 'V'
          mode: slider
          step: 0.1
    time:
      name: Time to test on
      description: Test is run at configured time
      default: '12:00:00'
      selector:
        time: {}
    actions:
      name: Actions
      description: Notifications or similar to be run.
      selector:
        action: {}
trigger:
- platform: time
  at: !input 'time'
condition:
- condition: numeric_state
  entity_id: !input 'door_sensor'
  attribute: battery_level
  below: !input 'threshold'
action:
- choose: []
  default: !input 'actions'
mode: single