Another technique that is often used in atria is that of beam detection. This technique uses a transmitter/receiver combination that functions with an infrared signal. When the infrared beam is disturbed by smoke, this can lead to a fire alarm.
Another technique that is often used in atria is that of beam detection. This technique uses a transmitter/receiver combination that functions with an infrared signal. When the infrared beam is disturbed by smoke, this can lead to a fire alarm.