Certified Fire Protection Specialist (CFPS) Practice Exam 2025 – The Comprehensive All-in-One Study Resource to Ensure Exam Success!

The category of smoke alarms that are classified as single- and multiple-station devices is the photoelectric type. Photoelectric smoke detectors function using a light source and a photoelectric sensor; they detect smoke by measuring the changes in light within the sensing chamber. When smoke enters the chamber, it scatters the light, prompting the alarm to sound.

Single-station devices operate independently and are used in individual rooms or areas, while multiple-station devices are interconnected, meaning that when one alarm detects smoke, all interconnected alarms will sound. This interconnectivity enhances safety by alerting occupants throughout the entire building.

The other options do not fit this categorization in the same way. Ionic type smoke detectors, for example, work using ionization and are typically independent devices as well but do not inherently create the interconnectivity described. Heat detectors, primarily designed to respond to temperature increases, do not function as smoke alarms. Combination alarms, while encompassing both smoke detection technologies, do not specifically highlight the single- and multiple-station classification as distinctly as photoelectric alarms do.