what sound does a carbon monoxide detector make
1 Beeping or chirping from a CO carbon monoxide detector alarm, a sound that is not continuous but sounds every few minutes, may indicate a dead or dying battery-replace the battery; if the alarm is in doubtful condition replace it.ere are some causes of Carbon Monoxide Detector alarms sounding: 1  The CO alarm has detected carbon monoxide in the building at a dangerous level. 2  The alarm may sound if there is a sudden surge of high concentrations of CO or it may sound if lower levels of CO have been present for a longer period.