Which type of device is typically used to detect unauthorized entry?

The selection of a glass break detector as the device used to detect unauthorized entry is accurate because this type of sensor is specifically designed to identify the sound or vibrations caused by breaking glass. It is commonly employed in security systems to monitor windows and doors. When the glass in a window is shattered, the detector reacts to the acoustic signatures or vibrations that occur, triggering an alert to signal a possible breach.

In contrast, smoke detectors serve to detect smoke in the air, typically as a fire safety measure, and carbon monoxide alarms are focused on identifying the presence of carbon monoxide gas, which is hazardous to health. A thermostat, on the other hand, is used for regulating temperature and does not have any function related to security or detecting unauthorized access. Thus, the glass break detector is the appropriate choice for identifying unauthorized entry into a premises.