Carbon monoxide detectors are devices designed to detect the presence of carbon monoxide (CO) gas in the air. CO is a colorless, odorless gas produced by burning fossil fuels, and it can be harmful or even fatal when inhaled in large amounts. These detectors work by sensing the levels of CO and sounding an alarm when they reach dangerous thresholds, providing an early warning to occupants. Most carbon monoxide detectors are battery-operated or can be plugged into electrical outlets. They are typically installed in areas where people sleep or spend significant time, such as bedrooms and living rooms. Regular testing and maintenance of these devices are essential to ensure they function properly and keep homes safe from CO exposure.