Which type of alarm system is best for detecting smoke in large open areas?

Projected beam smoke detectors are the best choice for detecting smoke in large open areas due to their operational design. These detectors utilize a beam of light that, when interrupted by smoke particles, triggers the alarm. Their ability to cover vast distances makes them ideal for spaces such as warehouses, gymnasiums, or auditoriums, where traditional point detectors may not adequately monitor the entire area.

In contrast, manual alarm systems rely on individuals to activate them, which does not efficiently address automatic smoke detection needs. Addressable systems offer advanced features, including individual device identification and monitoring, but may still need more precision in large, unobstructed spaces compared to beam detectors. Conventional smoke detectors typically function well in smaller or confined areas, as they rely on sensing smoke close to the unit, which may not be suitable for extensive open environments.