First Alert Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for First Alert products.

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

First Alert manuals

Latest posts, featured manuals, and retailer-linked manuals for this brand tag.

Featured manuals are a limited selection. Search for more manuals.

FIRST ALERT SMI105-AC 10 Year Battery 6 Pack Hardwired Ionization Sensor Smoke Detector User Manual

October 7, 2023

FIRST ALERT SMI105-AC 10 Year Battery 6 Pack Hardwired Ionization Sensor Smoke Detector Product Information Product Name: Smoke Alarm Model: SMI105-AC Power Source: AC Powered with 10-Year Battery Backup Features Battery (DC) operated Smoke Alarms for protection during power outages…

Brand: First Alert

FIRST ALERT SMI110 BRK 10-Year Battery 6-Pack Battery Operated Ionization Sensor Smoke Detector User Manual

October 7, 2023

FIRST ALERT SMI110 BRK 10-Year Battery 6-Pack Battery Operated Ionization Sensor Smoke Detector Product Information The Smoke Alarm model SMI110 is a 10-year sealed battery-operated device designed to provide protection against smoke and fire hazards. It is easy to install…

Brand: First Alert

FIRST ALERT SM210V 10 Year Battery Operated Photoelectric Sensor Smoke Detector User Manual

October 7, 2023

FIRST ALERT SM210V 10 Year Battery Operated Photoelectric Sensor Smoke Detector Product Information: Product Name: Smoke Alarm Model: SM210V Battery Type: 10-Year Sealed Battery Features: Voice & Location Product Usage Instructions Battery Operated Smoke Alarms: Provide protection even during power…

Brand: First Alert

Onelink 1039287 Smoke Detector and Carbon Monoxide Detector User’s Manual

September 2, 2023

Onelink 1039287 Smoke Detector and Carbon Monoxide Detector Introduction The Onelink 1039287 by FIRST ALERT is a cutting-edge 2-in-1 smart smoke and carbon monoxide detector designed to keep your home safe. With an assortment of features such as mobile and…

Brand: First Alert

First Alert CO600 120V Plug-In Carbon Monoxide Alarm with Silence Feature User Manual

August 5, 2023

First Alert CO600 120V Plug-In Carbon Monoxide Alarm with Silence Feature IMPORTANT! PLEASE READ CAREFULLY AND SAVE. This user’s manual contains important information about your Carbon Monoxide (CO) Alarm’s operation. If you are installing this CO Alarm for use by…

Brand: First Alert

First Alert SC9120B Carbon Monoxide Alarm User Manual

August 3, 2023

First Alert SC9120B Carbon Monoxide Alarm User Manual AC Powered Smoke & Carbon Monoxide Alarm with Battery backup, Silence Feature, and Latching Alarm IMPORTANT! PLEASE READ CAREFULLY AND SAVE This user’s manual contains important information about your Alarm’s operation. If…

Brand: First Alert

First Alert SCO5 Combination Carbon Monoxide and Smoke Alarm User Manual

August 1, 2023

First Alert SCO5 Combination Carbon Monoxide and Smoke Alarm Product Information The Combination Carbon Monoxide & Smoke Alarm is equipped with separate sensors to detect smoke and carbon monoxide. The two-alarm systems work independently to provide maximum protection against fire and…

Brand: First Alert

FIRST ALERT GCO1 Plug-In Explosive Gas and Carbon Monoxide Alarm User Manual

August 1, 2023

LUG-IN EXPLOSIVE GAS AND CARBON MONOXIDE ALARM WITH BATTERY BACK-UP AND SILENCE FEATURE 120VAC ~ 60Hz, 0.25 A IMPORTANT! PLEASE READ CAREFULLY AND SAVE. This user’s manual contains important information about your Smoke Alarm’s operation. If you are installing this…

Brand: First Alert

First Alert CO400 Battery Operated Carbon Monoxide Alarm with Silence Feature User Manual

July 31, 2023

USER’S MANUAL BATTERY OPERATED CARBON MONOXIDE ALARM WITH SILENCE FEATURE Model CO400 CONFORMS TO UL STD 2034 M08-0140-029 K1 06/15 Printed in Mexico IMPORTANT! PLEASE READ CAREFULLY AND SAVE. This user’s manual contains important information about your Carbon Monoxide (CO)…

Brand: First Alert

FIRST ALERT PIR 725 Motion Sensing Hands Free Socket User Manual

July 26, 2023

USER'S MANUAL MOTION SENSING HANDS-FREE SOCKET Cat. PIR 725 120VAC, 60 Hz, 100W Max. PIR 725 Motion Sensing Hands Free Socke US Patent D320,595 © 2009 BRK Brands, Inc. All rights reserved. M08-0222-000 10/09 IMPORTANT! PLEASE READ CAREFULLY AND SAVE.…

Brand: First Alert

First Alert Smart Smoke & Carbon Monoxide Alarm - Model 1042253

Technical Specification • October 28, 2025

Comprehensive details on the First Alert Smart Smoke & Carbon Monoxide Alarm (Model 1042253), covering features, technical specifications, system requirements, compatibility, and shipping information for enhanced home safety.

Brand: First Alert

SC5 Wireless Smart Smoke & Carbon Monoxide Alarm (SMC0600NV) - Installation & Reference Manual

Installation & Reference Manual • October 28, 2025

Comprehensive installation and reference manual for the First Alert SC5 Wireless Smart Smoke & Carbon Monoxide Alarm (SMC0600NV). Learn about safety features, installation, maintenance, and response procedures for smoke and carbon monoxide detection.

Brand: First Alert

First Alert SMCO110V-AC Smoke & Carbon Monoxide Alarm User Manual

User's Manual • October 27, 2025

Comprehensive user manual for the First Alert SMCO110V-AC AC-powered Smoke and Carbon Monoxide Alarm with 10-year sealed battery backup. Covers installation, features, maintenance, safety tips, and troubleshooting.

Brand: First Alert

First Alert SA10YRUKN Ionisation Smoke and Fire Alarm User Manual

User's Manual • October 24, 2025

This user manual provides comprehensive instructions for the First Alert SA10YRUKN Ionisation Smoke and Fire Alarm, covering installation, testing, maintenance, safety precautions, troubleshooting, and warranty information.

Brand: First Alert

First Alert PR710A 10-Year Sealed Battery Photoelectric Smoke Alarm User Manual

user manual • October 24, 2025

Comprehensive user manual for the First Alert PR710A photoelectric smoke alarm, covering installation, features, maintenance, safety tips, troubleshooting, and warranty information.

Brand: First Alert

First Alert DWC-400 Wireless Security Camera User's Manual

user manual • October 23, 2025

This user's manual provides comprehensive information for the First Alert DWC-400 Digital Wireless Security Camera. It includes product features, installation instructions, pairing procedures, troubleshooting tips, technical specifications, and warranty details. Designed for easy integration with First Alert DWS Series DVR systems, this…

Brand: First Alert

First Alert Remote Keypads FA215KP, FA260KP, FA560KP Installation Guide

installation guide • October 17, 2025

Installation guide for First Alert FA215KP, FA260KP, and FA560KP addressable remote keypads. Covers features, compatibility, wiring, installation, address setting, and specifications.

Brand: First Alert

First Alert Remote Keypads FA215KP, FA260KP, FA560KP Installation Guide

installation guide • October 17, 2025

Installation guide for First Alert addressable remote keypads including models FA215KP, FA260KP, and FA560KP. Covers features, wiring, installation, addressing, and specifications.

Brand: First Alert

First Alert FA220KP, FA270KP, FA570KP Remote Keypads Installation and Setup Guide

Installation Guide • October 17, 2025

This guide provides installation and setup instructions for First Alert Professional Security Systems remote keypads, including models FA220KP, FA270KP, and FA570KP. Learn about features, wiring, and addressing for these security system components.

Brand: First Alert

First Alert FA1600C/CA/CB Fire and Burglary Partitioned Security System User Guide

User Guide • October 17, 2025

Comprehensive user guide for the First Alert FA1600C/CA/CB Fire and Burglary Partitioned Security System with Scheduling. Learn about system overview, keypad functions, arming/disarming, security codes, fire and burglary protection, and maintenance for your Ademco-manufactured security system.

Brand: First Alert

First Alert FA1600C/CA/CB Fire and Burglary Partitioned Security System User Guide

User Guide • October 17, 2025

Comprehensive user guide for the First Alert FA1600C/CA/CB Fire and Burglary Partitioned Security System, detailing system overview, keypad functions, arming/disarming procedures, security codes, and maintenance.

Brand: First Alert

First Alert FA160C/FA162C Security System Installation and Programming Guide

Installation Guide • October 17, 2025

Installation and programming guide for First Alert FA160C and FA162C security alarm systems, covering installer notes, zone configuration, dialer settings, and quick reference information.

Brand: First Alert