User manuals and operations instructions for First Alert alarm products can be found online at FirstAlert.com. The manuals can be found by navigating to the product page of the smoke alarm in question.
First Alert makes all of its user manuals available online via its website. Point a web browser to FirstAlert.com. On the home page, locate the Products button on the menu bar in the middle of the page. Click the Products button and continue to the next page. Locate the Detectors product link located in the right column. Hover the mouse over a category of alarms from the options Smoke Alarms, Carbon Monoxide Alarms or Combination Smoke/Fire & Carbon Monoxide alarms. While the mouse is hovered, power options for Battery, Hardwire or Plugin may appear for each alarm category. Click on a power option to view the alarms in that category.
To find the user manual, click select a specific product and click on the thumbnail or link. On the product detail page, locate the Downloads tab beneath the product description. Click the tab and then click the black Download button that appears just below. Manuals generally come with both English and Spanish language versions in a single file and are downloaded as PDFs.