niecore

switch:
  - platform: command_line
    switches:
      switch_name:
        command_on: "usbrelay RELAY_1=1"
        command_off: "usbrelay RELAY_1=0"
        command_state: "usbrelay | grep -i 'RELAY_1' | grep -E -i '=1'"

niecore

1. Create new API Key on Backblaze 

Login via password and 2FA

2. Create remote for b2

[b2]
type = b2
account = keyID 
key = <applicationKey>