Which of the following is NOT typically a component of a burglar alarm system?

In a burglar alarm system, the primary focus is on detecting unauthorized entry into a premises and alerting the property owner or authorities. Common components of such systems include a control panel, which acts as the central hub for the system; motion detectors, which monitor for movement within a designated area; and alarm sirens, which emit loud sounds to deter intruders and notify occupants or neighbors of a breach.

Smoke detectors, while crucial for fire safety and often installed in conjunction with security systems, are specifically designed to detect smoke or signs of fire, rather than unauthorized entry. Therefore, they do not fall under the category of components specifically tailored for a burglar alarm system. This distinction illustrates why smoke detectors are considered the outlier in this context, as they serve a different function focused on fire hazards rather than burglary detection.