RFsensors.yaml

binary_sensor:
    - platform: mqtt
      state_topic: "tele/RF_Bridge/RESULT"
      name: 'Garage Motion'
      value_template: '{{value_json.RfReceived.Data}}'
      payload_on: 'D54C1E'
      off_delay: 10
      device_class: motion
      qos: 1
      retain: false
    - platform: mqtt
      name: "Garage Fridge"
      state_topic: "tele/RF_Bridge/RESULT"
      value_template: '{{value_json.RfReceived.Data}}'
      payload_on: "DF000A"
      payload_off: "DF000E"
      device_class: Cold
      qos: 1
      retain: false
    - platform: mqtt
      name: "Shop Door"
      state_topic: "tele/RF_Bridge/RESULT"
      value_template: '{{value_json.RfReceived.Data}}'
      payload_on: "F8030A"
      payload_off: "F8030E"
      device_class: Door
      qos: 1
      retain: false
    - platform: mqtt
      name: "Basment Water"
      state_topic: "tele/RF_Bridge/RESULT"
      value_template: '{{value_json.RfReceived.Data}}'
      payload_on: "84B90E"
      off_delay: 10
      device_class: Moisture
      qos: 1
      retain: false

    - platform: mqtt
      name: "Office Wand"
      state_topic: "tele/RF_Bridge/RESULT"
      value_template: '{{value_json.RfReceived.Data}}'
      payload_on: "D31421"
      off_delay: 10
      qos: 1
      retain: false
    - platform: mqtt
      name: "Office Book"
      state_topic: "tele/RF_Bridge/RESULT"
      value_template: '{{value_json.RfReceived.Data}}'
      payload_on: "C7C2A1"
      off_delay: 10
      qos: 1
      retain: false
 
 ##Automations for RF Sensors and Fun
   - alias: 'Garage Fridge Open'
    hide_entity: true
    trigger:
    - platform: state
      entity_id: binary_sensor.garage_fridge
      from: 'off'
      to: 'on'
      for: '00:02:00'
    action:
    - service: media_player.alexa_tts
      data:
        entity_id: media_player.kitchen_dot
        message: "Can someone please close the garage fridge?"
    - service: tts.google_say
      data:
        entity_id: media_player.adenaudiocast
        message: "Can someone please close the garage fridge?"  
  - alias: 'Basement Water Leak'
    hide_entity: true
    trigger:
    - platform: state
      entity_id: binary_sensor.basment_water
      from: 'off'
      to: 'on'
    action:
    - service: tts.google_say
      data:
        entity_id: media_player.adenaudiocast
        message: "Holy Crap there's water in the Basement again! Call someone, do something, ahhhhhhhh?"
    - service: media_player.alexa_tts
      data:
        entity_id: media_player.dads_office
        message: "Holy Crap there's water in the Basement again! Call someone, do something, ahhhhhhhh?"
    - service: notify.ios_justin_iphone7
      data:
        title: WATER LEAK
        message: "Holy Crap there's water in the Basement again! Call someone, do something, ahhhhhhhh?"
    - service: input_select.select_option
      data:
        entity_id: input_select.all_leds
        option: Police All

  - alias: Office Lock Magic
    hide_entity: true
    initial_state: 'on'
    trigger:
    - platform: state
      entity_id: binary_sensor.office_book
      to: 'on'
    - platform: state
      entity_id: binary_sensor.office_wand
      to: 'on'
    action:
    - service: switch.toggle
      data:
        entity_id: switch.office_lock
    - service: tts.google_say
      data:
        entity_id: media_player.adenaudiocast
        message: "You have chosen wisely. You may enter my realm"

  - alias: Garage Lights Off
    hide_entity: true
    initial_state: 'on'
    trigger:
    - platform: state
      entity_id: binary_sensor.garage_motion
      from: 'on'
      to: 'off'
      for:
        minutes: 5
    action:
    - service: switch.turn_off
      data:
        entity_id: switch.garage_lights
  - alias: Garage Lights On
    hide_entity: true
    initial_state: 'on'
    trigger:
    - platform: state
      entity_id: binary_sensor.shop_door
      to: 'on'
    - platform: state
      entity_id: binary_sensor.garage_entry
      to: 'on'
    - platform: state
      entity_id: binary_sensor.garage_motion
      to: 'on'
    condition:
    - condition: state
      entity_id: switch.garage_lights
      state: 'off'
    action:
      service: switch.turn_on
      data:
        entity_id: switch.garage_lights

Nowadays we get such error on check config.
.... [retain] is an invalid option for [binary_sensor.mqtt]....