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First Alert Manuals & User Guides

First Alert is a trusted leader in home safety products, manufacturing reliable smoke alarms, carbon monoxide detectors, fire extinguishers, and smart home security solutions.

Tip: include the full model number printed on your First Alert label for the best match.

First Alert Support

Official site: https://www.firstalert.com/
General support: https://support.firstalert.com/s/
Warranty & registration: Warranty info · Register a product
Support phone: 1-800-323-9005 — 7 days a week
Contact form: Contact manufacturer support

First Alert manuals

Latest manuals from manuals+ curated for this brand.

First Alert SC9120B Smoke and Carbon Monoxide Alarm User Manual

User Manual

User manual for the First Alert SC9120B AC Powered Smoke & Carbon Monoxide Alarm with Battery Back-up. Learn about installation, operation, safety tips, maintenance, and troubleshooting.

First Alert SC7010B Smoke and Carbon Monoxide Alarm User Manual

User's Manual

Comprehensive user manual for the First Alert SC7010B AC Powered Smoke & Carbon Monoxide Alarm, covering installation, features, maintenance, troubleshooting, and safety information.

First Alert CO5120BN/CO5120PDBN User Manual: AC Powered Carbon Monoxide Alarm Guide

user manual

Comprehensive user manual for the First Alert CO5120BN and CO5120PDBN AC-powered Carbon Monoxide Alarms. Learn about installation, operation, safety features, and maintenance for reliable carbon monoxide detection in your home.

First Alert 7030BSL Combination Smoke and Carbon Monoxide Alarm with Strobe Light User Manual

user manual

Detailed user manual for the First Alert 7030BSL combination smoke and carbon monoxide alarm with integrated strobe light. Learn about installation, operation, maintenance, safety tips, and troubleshooting for this essential…

First Alert and BRK Smoke and Carbon Monoxide Alarms User Manuals

User Manual

Comprehensive user manuals for First Alert and BRK Brands, Inc. safety devices, including smoke alarms and combination smoke and carbon monoxide (CO) alarms. These guides detail installation, operation, maintenance, and…

First Alert HD6135FB Heat Alarm User Manual and Installation Guide

User Manual

Comprehensive user manual and installation guide for the First Alert HD6135FB 120V AC/DC powered heat alarm with battery backup. Learn about installation, operation, maintenance, troubleshooting, and safety.

First Alert 3120B Photo & Ion Smoke Alarm User Manual

User Manual

This user manual provides comprehensive instructions for the First Alert 3120B AC-powered photo and ionization smoke alarm with battery backup. It covers installation, operation, maintenance, safety tips, troubleshooting, and warranty…

First Alert CO5120BN/CO5120PDBN Carbon Monoxide Alarm User Manual and Installation Guide

User Manual

Comprehensive user manual and installation guide for the First Alert CO5120BN and CO5120PDBN AC-powered Carbon Monoxide Alarms, covering features, installation, operation, maintenance, and safety information.

First Alert SM110LED-AC Smoke Alarm User's Manual

User's Manual

Comprehensive user manual for the First Alert SM110LED-AC AC-powered smoke alarm with strobe light and 10-year sealed battery backup. Covers installation, operation, maintenance, troubleshooting, safety tips, and warranty information for…

First Alert SC7010BV Smoke & Carbon Monoxide Alarm User Manual

User Manual

Comprehensive user manual for the First Alert SC7010BV AC Powered Smoke & Carbon Monoxide Alarm, detailing installation, operation, maintenance, troubleshooting, and safety information.

First Alert SC7010B Smoke and Carbon Monoxide Alarm User Manual

User Manual

User manual for the First Alert SC7010B AC powered smoke and carbon monoxide alarm. Learn about installation, testing, maintenance, troubleshooting, and safety features for home protection against fire and CO…

First Alert 7020BSL Smoke & Strobe Light Combo Alarm User Manual

User's Manual

Comprehensive user manual for the First Alert 7020BSL Smoke & Strobe Light Combo Alarm, covering installation, operation, maintenance, safety tips, troubleshooting, and warranty information. Designed for hearing impaired individuals.