Which of the following is NOT a component of a smoke detector?

A smoke detector is designed to detect the presence of smoke in order to provide an early warning of fire. Two common types of smoke detection technologies are the photoelectric sensor and the ionization chamber. The photoelectric sensor detects smoke particles by utilizing a light beam that gets scattered when smoke enters the detection chamber. The ionization chamber works by using radioactive ions that are disrupted by smoke particles, triggering an alarm.

The control board is also a crucial component of a smoke detector, as it processes signals from the sensors and initiates the alarm when smoke is detected.

On the other hand, a smoke generator is not a component of a smoke detector. Instead, it is typically used in training or testing environments to create artificial smoke for the purpose of testing the effectiveness of smoke detectors and other fire protection systems. Smoke detectors do not contain smoke generators as a functional component, making this option the correct choice.