Carbon Monoxide Detector,CO Gas Monitor Alarm Detector,CO Sensor with LED Digital Display, 85dB Sound Alarm for Home,Office (Batteries NOT Included) (1piece) HORUSDY 5-Ah batteries in 40 minutes

5-Ah batteries in 40 minutes or less

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Carbon Monoxide Detector,CO Gas Monitor Alarm Detector,CO Sensor with LED Digital Display, 85dB Sound Alarm for Home,Office (Batteries NOT Included) (1piece) HORUSDY 5-Ah batteries in 40 minutesAbout this item Digital Display: It has a digital display for showing readings of carbon monoxide levels between 0 999ppm for actual concentration by LCD display. Visible LCD with 3 digits. When 'Err' on the LCD to indicate the device is FaultYellow LED light alarm continuously sound loudly),When'Lb' on the LCD it is a low battery indicator to remind you of when to replace the batteries. When'0 999ppm' for showing CO concentration. The Blue backlit