Successful choral directors are typically expert musicians who are accomplished in the field of music. Depending on their employer, directors may be required to have some type of formal training in a related major, such as music or music education.
The term false alarm is actually a misnomer, and is regularly replaced by the term nuisance alarm. When a sensor operates, it is hardly false, and it is usually a true indication of the present state of the sensor.
At 400 parts per million (PPM), the alarm will sound within a few minutes. This concentration-time function is intended to mimic the uptake of carbon monoxide in the body while also preventing false alarms due to relatively common sources of carbon monoxide such as cigarette smoke.