First Alert Brk 1039734 Co Alarm Plug-in Battery Backup

Product Description

The FIRST ALERT BRK 1039734 is a plug-in carbon monoxide alarm designed for continuous residential or light commercial CO monitoring. The unit draws primary power from a standard 120-volt outlet and includes a battery backup to maintain operation during power outages. Detection relies on an electrochemical carbon monoxide sensor, which provides accurate, stable readings across varying CO concentration levels. When CO rises above a safe threshold, an 85-decibel alarm activates to alert occupants. A single-button interface handles both test and silence functions, simplifying day-to-day operation for installers and end users alike. An integrated end-of-life timer signals when the unit requires replacement.

This alarm is intended for plug-in installation in residential settings such as single-family homes, apartments, and light commercial spaces where 120-volt outlets are accessible. It suits applications near fuel-burning appliances including furnaces, boilers, water heaters, and fireplaces. HVAC technicians, electricians, and general contractors commonly supply and install CO alarms as part of system commissioning or code-compliance work. No hardwiring is required, making this a straightforward addition to any service call involving combustion equipment.

Key Features

• Electrochemical CO sensor for accurate, stable detection of carbon monoxide gas
• 85-decibel alarm provides clear audible alert when CO levels exceed safe thresholds
• Plug-in 120-volt design with battery backup maintains monitoring during power outages
• Single-button operation for test and silence functions reduces user error
• End-of-life timer indicates when the device requires replacement

Compatibility

Designed as a plug-in replacement or new-installation CO alarm for residential and light commercial spaces equipped with standard 120-volt outlets.

Installation Notes

Installation requires no tools beyond access to a standard 120-volt AC outlet. Locate the alarm per manufacturer guidance and applicable codes such as NFPA 720, which governs CO detection placement relative to sleeping areas and fuel-burning appliances. Verify the backup battery is installed and functional before completing any service call. Do not install in locations subject to excessive humidity, temperature extremes, or areas that could block airflow to the sensor.