What are two functions that are required to be tested for each installed smoke detector? (choose two)

In the context of fire alarm systems, smoke detectors play a critical role in early fire detection, and testing their performance is essential for ensuring they function correctly when needed. Sensitivity is one of the primary functions that must be tested for each installed smoke detector. This test is intended to verify that the detector responds within the manufacturer's specified sensitivity range to smoke particles. Ensuring proper sensitivity helps to avoid false alarms while also ensuring the detector will react effectively in the presence of smoke from an actual fire.

Smoke entry is another important function that is vital to evaluate during testing. This involves ensuring that the detector is appropriately located and positioned to allow adequate airflow and smoke penetration to guarantee that it can detect smoke efficiently. Any obstructions or improper installation could hinder the smoke’s ability to reach the sensing element, thereby compromising the device’s responsiveness.

Both of these tests help ensure that smoke detectors are reliable in detecting smoke and signaling an alarm, which is paramount in protecting lives and property in the event of a fire.