What type of detector could be installed to protect a large open area where a common smoke detector is not appropriate?

A beam detector is specifically designed to monitor large open areas, making it an ideal choice where traditional smoke detectors may not be effective. In settings like warehouses, auditoriums, or gymnasiums, these detectors use a light beam (either infrared or laser) that spans the distance across the space. When smoke enters the beam path and obscures the light, the detector can sense this interruption and trigger an alarm.

This type of sensor is particularly useful for its ability to cover large areas without the need for multiple units, thus providing an efficient solution for smoke detection in spaces where high ceilings or wide-open layouts exist. Beam detectors are also less sensitive to air movement compared to other smoke detectors, which can lead to false alarms in dynamic environments.

Other detectors, such as photoelectric sensors, heat detectors, or infrared detectors, may serve specific functions but are not as effective in wide open spaces as beam detectors. Photoelectric sensors typically respond to the presence of smoke particles but may not cover large areas efficiently. Heat detectors react to temperature changes rather than smoke, which is not ideal for early detection of fire in expansive spaces. Infrared detectors are more suited for detecting heat sources rather than smoke and may not be effective in identifying potential fire hazards in vast areas.