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.
Smoke alarms are devices that are able to detect smoke or fire, giving an audible alarm as a result. They are fantastic at detecting a fire in its early stages, allowing you adequate warning to evacuate before inhaling any harmful gases.