ESPHome Fallback config example.

gistfile1.txt

output:
  - platform: gpio
    pin: GPIO4
    id: shelly_25_relay_1
  - platform: gpio
    pin: GPIO15
    id: shelly_25_relay_2

fan:
  - platform: binary
    name: "${channel_1}"
    output: shelly_25_relay_1
    id: fanid1
    
light:
  - platform: binary
    name: "${channel_2}"
    output: shelly_25_relay_2
    id: lightid1

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO13
    name: "${channel_1} input"
    on_press:
      if:
        condition:
          api.connected:
        then: # Nothing, we let Node-Red Handle it.
        else:
         - fan.turn_on: fanid1
    on_release:
      if:
        condition:
          api.connected:
        then: # Nothing, we let Node-Red Handle it.
        else:
         - fan.turn_off: fanid1
       
    ######DO NOT REMOVE STOPS OVERHEATING ###  
    ### https://www.savjee.be/2020/11/shelly25-esphome-potential-fire-hazard-fix/ ###
  - platform: gpio
    pin: GPIO16
    name: "ade7953 IRQ pin"
    internal: true