Step 1: Go into the Kidde app, click on "Account" -> "Alerts" -> Enable Alexa

Step 2: In your Alexa app,
  • Click on "More"
  • Click on "Skills & games"
  • Search for "Kidde Alarm"
  • Click on "Kidde Alarm"
  • Click on "Enable Skill"
  • Enter the credentials of your Kidde app
You are all set to use your Kidde device through Alexa. Just say something like: "Alexa... ask Kidde alarm status in the Living Room."