Tag: carbon monoxide detector battery beep

It probably means your CO alarm has reached its end of life and should be replaced. CO alarms have a ...

Three beeps, at 15-minute intervals = MALFUNCTION. The unit is malfunctioning. ... Five beeps, at 15-minute intervals = END OF ...

Three beeps, at 15-minute intervals = MALFUNCTION. The unit is malfunctioning. ... Five beeps, at 15-minute intervals = END OF ...