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.
About First Alert manuals on Manuals.plus
For over six decades, First Alert has been a premier name in residential fire safety, dedicated to protecting families and homes with reliable detection technology. Now a part of Resideo Technologies, Inc., the brand offers a comprehensive portfolio of safety products including smoke alarms, carbon monoxide (CO) detectors, combination alarms, and fire extinguishers. First Alert also produces safes, cash boxes, and the innovative Onelink smart home series, which integrates voice assistants and mobile connectivity for enhanced home protection.
First Alert products are designed to meet rigorous safety standards and provide early warning in emergency situations. From traditional hardwired and battery-operated alarms to modern interconnected systems that communicate hazards across the home, First Alert continues to innovate to save lives. Their devices are widely used in single-family homes, multi-family units, and commercial spaces, ensuring peace of mind through detection and preparation.
First Alert manuals
Latest manuals from manuals+ curated for this brand.
FIRST ALERT SMI100-AC Wired Smart Smoke and Carbon Monoxide Alarm Instruction Manual
FIRST ALERT M08-0794-000 ADAPTER PLUG Instruction Manual
FIRST ALERT WLD3DCABLE Cable Sensor for Wi-Fi Water Leak and Freeze Detector Installation Guide
FIRST ALERT ADN-12 Hardwired Smoke and Carbon Monoxide Installation Guide
FIRST ALERT SMCO600NV-AC Wired Smart Smoke and Carbon Monoxide Alarm Instruction Manual
FIRST ALERT SC5 Smart Hardwire Smoke And Carbon Monoxide Alarm Installation Guide
FIRST ALERT SC5 Wired Smart Smoke and Carbon Monoxide Alarm Installation Guide
First Alert M7U-BT110T Wireless Smart Smoke and Carbon Monoxide Alarm Installation Guide
First Alert SCO7 Voice and Location Smoke Detector User Manual
First Alert 9120/9120B AC Powered Smoke Alarm User Manual
First Alert ZCOMBO Combination Smoke and Carbon Monoxide Alarm User Manual
First Alert VISTA H3 Control Panel - Technical Specifications and Ordering Information
First Alert SMI100 Battery-Operated Smoke Alarm User's Manual
First Alert FA2000C Fire Alarm Control/Communicator User Manual
FA2000C Fire Alarm Control/Communicator User Manual - First Alert
First Alert A-520 Indoor/Outdoor Analog Wireless Camera User Manual
First Alert Combo Smoke & CO Alarm MA301 Instruction Manual
First Alert SA520A Smoke Alarm User Manual: Installation & Operation
First Alert RM4 Accessory Relay User Manual and Installation Guide
First Alert SmartBridge DVR Security System Quick Start Guide
First Alert ZCOMBO Combination Smoke and Carbon Monoxide Alarm User Manual
First Alert manuals from online retailers
First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide Alarm User Manual
First Alert SMCO210 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm Instruction Manual
First Alert BRK PRC710 Smoke and Carbon Monoxide Alarm User Manual
First Alert SCO501CN-3ST Wireless Interconnected Combination Smoke and Carbon Monoxide Alarm User Manual
First Alert SMCO100 Combination Smoke and Carbon Monoxide Alarm User Manual
First Alert CO410 Carbon Monoxide Detector Alarm User Manual
First Alert SMI100 Battery-Operated Smoke Alarm User Manual
First Alert PRC710 PC1210 10-Year Combination Carbon Monoxide and Photoelectric Smoke Detector Instruction Manual
First Alert Onelink Safe & Sound Smart Smoke and Carbon Monoxide Alarm with Alexa and Premium Speaker User Manual
First Alert SCO5CN Combination Smoke and Carbon Monoxide Detector User Manual
First Alert SMCO100V-AC Hardwire Combination Smoke & Carbon Monoxide Alarm User Manual
First Alert SMICO100-AC Combination Smoke & Carbon Monoxide Alarm Instruction Manual
First Alert video guides
Watch setup, installation, and troubleshooting videos for this brand.
First Alert CO615 Plug-In Carbon Monoxide Detector with Digital Display | Home Safety
First Alert SMI100 Battery-Operated Carbon Monoxide Alarm with Digital Display & Test Button
First Alert SMI100 Smoke and Carbon Monoxide Detector Setup & Unboxing
First Alert Onelink Safe & Sound: Smart Smoke & CO Alarm with Alexa & Premium Speaker
First Alert support FAQ
Common questions about manuals, registration, and support for this brand.
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How often should I test my First Alert smoke or CO alarm?
It is recommended to test your First Alert alarms once a week using the test button to ensure the unit is functioning correctly and the batteries are active.
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What should I do if my First Alert alarm is chirping?
A chirping sound typically indicates a low battery or that the alarm has reached the end of its life. Check the battery first; if the unit is older than its rated life (often 7 or 10 years), replace the entire unit immediately.
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Where should I install First Alert smoke alarms?
For minimum coverage, install a smoke alarm on every level of your home, inside every bedroom, and outside every sleeping area. Avoid installing them near kitchens or bathrooms to prevent nuisance alarms from cooking or steam.
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What is the difference between photoelectric and ionization smoke alarms?
Ionization technology is generally more sensitive to fast-flaming fires, while photoelectric technology is better at detecting smoldering fires. First Alert recommends dual-sensor alarms or a mix of both types for maximum protection.
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How do I contact First Alert support?
You can contact First Alert support by phone at 1-800-323-9005 or visit their online support center for troubleshooting guides and warranty claims.