General description This Carbon Monoxide and Smoke Detector is a dual-function home alarm that features built-in sensors to monitor smoke and carbon monoxide (CO) levels. It displays the concentrations on a large LCD screen, ensuring you are aware of the air quality in your home. Technical specifications Alarm sound level: greater than 85 dB Carbon monoxide alarm threshold: exceeds 300 ppm Smoke alarm threshold: greater than 0.1% db/m Battery standby time: six months Low battery alert: red light flashes once every 10 seconds, LCD displays "Lb" Usage When CO levels exceed 300 ppm, the alarm sounds, the red light flashes, and the buzzer beeps every 5 seconds. If smoke concentration exceeds 0.1% db/m, the alarm sounds continuously with a blue light flashing. In case of alarm, close the valve and open doors and windows for ventilation. Other information During testing, place the alarm in a sealed bag and expose it to carbon monoxide and smoke. The detector enters sleep mode during normal