Kidde has been making residential safety devices for decades. This AC-plug-in carbon monoxide detector stands out because it combines three useful functions into one unit: a CO alarm, a night light, and an emergency escape light. The rotating AC plug keeps the detector vertical regardless of your outlet orientation, which solves a small but annoying installation problem.

The electrochemical sensor detects carbon monoxide at levels as low as 30 parts per million. That’s the threshold where health effects begin for sensitive individuals. The digital display shows the current CO concentration in real time, so you can see if levels are rising before the alarm sounds. A sealed lithium battery provides backup power for up to 10 years, meaning the detector keeps working during power outages without requiring battery swaps.

The built-in night light activates automatically in low light, which is helpful for hallways and bathrooms. The escape light triggers during an alarm, illuminating a path to the exit. The visual alarm pattern uses a strobe light that reaches 177 candela, making it useful for anyone with hearing impairments. One limitation: this model doesn’t support voice alerts or smart home connectivity, so you won’t get push notifications on your phone. But for a straightforward, reliable CO detector that handles the basics well, this is a solid choice for bedrooms and common areas.