Ademco Inc. 1039741 Carbon Monoxide Alarm 2 Pack

Product Description

The ADEMCO INC. 1039741 is a two-pack of battery-operated carbon monoxide alarms designed for residential use. Each unit uses an electrochemical CO sensor to detect carbon monoxide gas that is invisible and odorless. Power comes from a single 9-volt replaceable battery per unit, so the alarms remain functional during power outages. The internal sensor is rated for up to 5 years of service life. An 85-decibel horn activates when CO levels reach a dangerous threshold. A licensed electrician or general contractor typically handles hardwired CO detector installs, but these battery-only units require no wiring and no outlet.

These alarms are suited for residential applications including single-family homes, apartments, and rental units. Because they require no outlet or permanent installation, they can be placed on a countertop or mounted to a wall using the included optional wall mount bracket. The pull-down action chart printed on each detector provides occupants with guidance on response steps if the alarm activates. This makes the units practical for landlords, property managers, and homeowners who need fast, code-compliant CO detection without a hardwired install.

Key Features

• Electrochemical carbon monoxide sensor detects CO gas that cannot be seen, smelled, or tasted
• Each unit powered by one 9-volt replaceable battery — no outlet or wiring required
• Permanent internal sensor rated for up to 5 years of service life
• 85-decibel alarm horn sounds when CO levels exceed safe thresholds
• Test/Silence button allows functionality testing and alarm silencing
• Pull-down action chart on unit provides emergency response guidance
• Optional wall mount bracket included for permanent placement

Compatibility

Designed as a standalone battery-operated carbon monoxide alarm suitable for general residential use where no hardwired CO detection system is required.

Installation Notes

No wiring or electrical connection is required for these units. Install or place each alarm according to local building codes and the manufacturer instructions — many jurisdictions follow NFPA 720 guidelines for CO alarm placement. Power down any nearby HVAC equipment before servicing adjacent detectors if applicable. Do not install in locations with excessive humidity, direct sunlight, or near cooking appliances, as these conditions can affect sensor accuracy.

Technical Specifications

• Sensor Type: Electrochemical carbon monoxide sensor
• Power Source: 9-volt replaceable battery (one per unit)
• Sensor Life: Up to 5 years
• Alarm Sound Level: 85 decibels
• Pack Quantity: 2 units
• Weight: 3.09 pounds (package)

Standard Information

• Brand: ADEMCO INC.
• Manufacturer Part Number: 1039741