Tag: what does a kidde carbon monoxide alarm sound like

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

4 Beeps and a Pause: EMERGENCY. This means that carbon monoxide has been detected in the area, you should move ...

4 Beeps and a Pause: EMERGENCY. This means that carbon monoxide has been detected in the area, you should move ...