Kidde Carbon Monoxide Detector Plug-In with 9V Battery Backup, Digital Display & 85 dB Alarm

The Kidde Plug-In Carbon Monoxide Detector is a powered CO alarm with a 9V battery backup, digital readout, 85 dB alert and peak memory to help you detect and respond to carbon monoxide in your home.

This Kidde unit uses an electrochemical sensor to measure carbon monoxide (CO) levels and presents the current reading on a digital LED display that updates every 15 seconds. It’s designed for simple installation: plug it into a standard 120V outlet, mount it on a wall, or use the included extension cord to sit it on a table or shelf. A 9-volt battery backup (included) maintains protection during power interruptions, while an 85-decibel alarm and LED status lights notify occupants when CO is detected.

How does the detector let me know there’s carbon monoxide?

The detector continuously measures CO and shows the parts-per-million (ppm) level on the digital display. If CO reaches a concerning level, the unit triggers an 85 dB alarm and activates LED status indicators to attract attention.

• Real-time digital readout updates every 15 seconds
• 85 dB audible alarm for immediate warning
• LED status lights clarify power and alarm condition
• Peak level memory records the highest CO level detected

What makes installation and everyday use simple?

Installation is straightforward: plug the unit into any standard 120V outlet or use the extension cord to place it on a flat surface. Wall-mounting is also supported, and the included 9V battery ensures the detector remains operational during outages.

• Plug-in design for fast setup—no wiring needed
• 8-foot extension cord included for flexible placement
• 9V battery backup included for power-failure protection
• Smart-Hush button silences nuisance alarms for approximately eight minutes

How accurate and reliable is the sensing technology?

This Kidde alarm uses an electrochemical sensor, a commonly accepted method for precise CO detection. The unit meets UL standards and NFPA recommendations, and it keeps a peak memory log so you can review the highest CO level recorded since the last reset.

• Electrochemical sensing for dependable CO measurement
• Digital display range from 30 to 999 ppm for clear readings
• Peak Level Memory stores the last significant event
• Complies with UL 2034, UL217 and NFPA72 standards

When should I replace or add more alarms in my home?

Follow best practices by installing at least one CO alarm on every level and near sleeping areas. Kidde recommends replacing CO alarms every 5–7 years to benefit from advances in sensing technology and to ensure ongoing reliability.

• Install alarms on each floor and outside sleeping areas
• Keep units at least 15 feet from cooking or heating appliances to avoid false alarms
• Replace alarms every 5–7 years per manufacturer guidance
• Use battery backup for continual protection during outages

Who is this for: Homeowners and renters who want a dependable, easy-to-install carbon monoxide detector with a clear digital readout and battery backup. It’s suited for bedrooms, living areas, and any location where plug-in power is available and quick, visible CO level information helps families respond promptly.