First Alert 1039734 Plug-in Co Alarm 120V Battery Backup

Product Description

The FIRST ALERT 1039734 is a plug-in carbon monoxide alarm designed for continuous residential monitoring of CO gas. It uses an electrochemical sensor to detect elevated carbon monoxide levels accurately and trigger an 85-decibel audible alert when concentrations exceed safe thresholds. The unit plugs directly into a standard 120-volt outlet and includes battery backup so monitoring continues during power outages. A single-button interface handles both alarm silencing and unit testing. An integrated end-of-life timer signals when the device requires replacement.

This CO alarm is suited for residential installations in homes, apartments, and similar living spaces where carbon monoxide hazards may arise from combustion appliances such as furnaces, water heaters, fireplaces, and attached garages. The plug-in format allows quick deployment without hardwiring, making it practical for both permanent installation and temporary monitoring needs. Battery life will vary based on use conditions and application environment.

Key Features

• Electrochemical CO sensor for accurate detection of carbon monoxide gas
• 85-decibel alarm provides audible alert when CO levels exceed safe thresholds
• Plugs into any standard 120-volt outlet — no hardwiring required
• Battery backup maintains protection during power outages
• Single-button operation for alarm silence and self-test
• End-of-life timer indicates when unit replacement is needed

Compatibility

Designed for use with standard 120-volt AC outlets in residential settings typical of plug-in carbon monoxide alarms.

Installation Notes

Installation is performed by plugging the unit directly into a 120-volt outlet at the appropriate height per local code and manufacturer guidance. No tools or hardwiring are required for basic installation. Follow NFPA 720 and local jurisdiction requirements for CO alarm placement, including recommended distances from combustion appliance vents and bedroom areas. Insert the backup battery before use and confirm the unit passes the self-test prior to leaving the installation.

Technical Specifications

• Sensor Type: Electrochemical
• Power Input: 120 volts AC plug-in
• Alarm Output: 85 decibels
• Battery Backup: Included
• Weight: 0.632 pounds
• Sold As: Each
• UPC: 00029054018403

Standard Information

• Brand: FIRST ALERT
• Manufacturer Part Number: 1039734