To find an official FireX manual, go to Kidde.com, and click the For Owners link in the top menu. The top menu is located in the upper center portion of the Web page. Then, enter FireX in the search field, and click the magnifying glass.
Select your FireX model, and click the link to download the User Guide and official manual as a PDF document. User guides are available in English and Spanish.
According to the company, Kidde is the world's largest manufacturer of fire safety products. Walter Kidde founded the company in 1917. As of 2015, Kidde donates over 100,000 smoke detectors and carbon monoxide detectors to non-profit companies across the United States of America.