Carbon monoxide alarm displays test/reset buttons and vent slots, with three exposed red, black and white wires protruding from its side, photographed against a plain white background, ready for installation.

120V AC Carbon Monoxide Alarm with 9V Battery Backup

900-0128CA

Provides peace of mind against the silent killer.

  • 120V Interconnectable – Will interconnect with up to 24 other devices (18 of which can be initiating), including smoke alarms (limit of 12), CO and heat alarms.

  • 9V Battery Backup – Provides continuous protection even during power outages.

  • Test/Reset Button – Tests the unit for proper operation. Resets the carbon monoxide alarm.

  • Tamper Resist Feature – Unit will lock to mounting bracket to deter theft or tampering.

Helpful Resources
Carbon monoxide alarm displays test/reset buttons and vent slots, with three exposed red, black and white wires protruding from its side, photographed against a plain white background, ready for installation.
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A young girl and a woman smile while fitting wooden puzzle pieces together on a carpeted floor, lying beside a patterned armchair and a wall thermostat in a living room.
A red fire extinguisher stands upright beside smoke and carbon-monoxide alarms and packaging, arranged on a light wooden table against a pale wall with a large red "#1" safety-brand badge.

Why Kidde

As North America's #1 home fire safety brand,* Kidde has been working to help make your home the safest it can be for more than 100 years. Now, our latest smoke alarms and combination smoke + carbon monoxide (CO) alarms are bringing you the next level of fire and CO safety. Help protect what matters most in your life with features like cutting edge technology that send fast alerts to give your family more time to get out safely. And enhanced sensing technology that reduces false alarms often caused by cooking.

*Based on total household installations as of December 2023.