In a case of emergencies, how must emergency call units be designed?

The correct answer is that emergency call units must be designed to be user-friendly. In an emergency situation, the usability of these units is crucial for ensuring prompt and effective responses. A user-friendly design allows residents, staff, and visitors to easily operate the call units under potentially stressful conditions. It minimizes the cognitive load that might prevent someone from responding appropriately during a crisis.

For instance, intuitive layouts, clear labeling, and accessible placement make it easier for individuals, including those who may have mobility or cognitive impairments, to reach and activate the call unit when help is needed. Implementing designs that consider human factors and usability principles enhances safety and responsiveness in emergencies.

While self-activating systems, signaling alarms only, and using both sound and light are important aspects of emergency systems, they do not prioritize the user experience and ease of operation as effectively as a user-friendly design does. These features may contribute to overall effectiveness, but without a focus on user-friendliness, the risk of confusion or delay in seeking help increases during emergencies.