Which devices provide notification to warn building occupants?

Indicating devices play a crucial role in providing notifications to warn building occupants of an emergency situation. These devices, which include alarms, sirens, and visual indicators such as strobe lights, are designed to grab the attention of individuals within the premises and effectively communicate imminent dangers such as fires, intrusions, or hazardous conditions.

When an alarm system is activated, these indicating devices notify occupants to take appropriate action, which could involve evacuating the building or following safety protocols. Their primary function is to ensure that all individuals are aware of a potential threat, thus enhancing overall safety within the environment.

While vibration devices can alert individuals with sensory impairments, and sensors can detect changes in environmental conditions, it is the indicating devices that are specifically focused on providing clear and immediate notification to all building occupants. Therefore, the option chosen correctly identifies the type of device that serves the purpose of warning occupants about dangers effectively.