The answer to 'types of carbon monoxide detector' is that there are several main types of carbon monoxide (CO) detectors for homes: battery-powered, plug-in, and hardwired. Battery-powered detectors are the most common and portable option, while plug-in detectors are convenient and don't require battery changes. Hardwired detectors are permanently installed and wired into the home's electrical system, often with battery backup.
All of these CO detectors use different sensor technologies to monitor for the presence of carbon monoxide, a colorless, odorless gas that can be deadly in high concentrations. They are designed to alert homeowners with an alarm when unsafe CO levels are detected, allowing time to evacuate and ventilate the home.