Accurate detection: Our carbon monoxide alarm uses advanced electrochemical high-sensitivity sensors to accurately and quickly detect carbon monoxide gas leaks, effectively protecting you from potential dangers while minimizing false alarms. Light and Sound Warning: This CO alarm continuously monitors the carbon monoxide concentration in the air in real time. When a dangerous level is detected, the 85dB alarm sounds and the red LED flashes to remind you, ensuring the safety of your family and property. EASY INSTALLATION: The CO detector is effortless to install - simply unscrew the backplate, screw it to the desired position, insert the 3x1.5V AA batteries (not included), and connect the detector to the backplate on and rotate it into place. A low battery alarm notifies you when the battery needs replacing, making battery replacement easy. CLEAR DIGITAL DISPLAY: The digital LCD display shows a wide range of real-time carbon monoxide levels, ranging from 000 to 999PPM. The blue