SC01 Smoke Detector Carbon Monoxide(CO) Detector Combination Alarm

This combination alarm combines photoelectric and electrochemical technologies to detect both smoke from smoldering fires and dangerous CO concentrations, delivering 2-in-1 protection. An easy-to-read LCD allows you to tell if carbon monoxide is present and gives you time to respond before it becomes dangerous. It also informs you of the battery status and any faults. Built with a sealed lithium battery that lasts 10 years between replacements.